Hasegawa; Waka

Patent Applications and Registrations

Patent applications and USPTO patent grants for Hasegawa; Waka.The latest application filed is for "external additive particles, toner, and method for producing external additive particles".

Company Profile

8.28.45

Hasegawa; Waka - Tokyo JP
Hasegawa; Waka - Kawasaki-shi JP
Hasegawa; Waka - Kawasaki JP
Hasegawa; Waka - Kanagawa-ken JP
Hasegawa; Waka - Yokohama-shi JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
External Additive Particles, Toner, And Method For Producing External Additive Particles App 20220171305 - Shirakawa; Jun ; et al.	2022-06-02
External Additive Particle And Toner App 20220128920 - Shirakawa; Jun ; et al.	2022-04-28
Liquid Developer And Method For Manufacturing Liquid Developer App 20200225599 - Hasegawa; Waka ; et al.	2020-07-16
Liquid developer and method of producing liquid developer Grant 10,545,424 - Hasegawa , et al. Ja	2020-01-28
Method for producing liquid developer Grant 10,423,084 - Aichi , et al. Sept	2019-09-24
Liquid Developer And Method For Manufacturing Liquid Developer App 20190271929 - Shirakawa; Jun ; et al.	2019-09-05
Method For Producing Liquid Developer App 20190155180 - Aichi; Yasuhiro ; et al.	2019-05-23
Liquid Developer And Method For Producing Liquid Developer App 20190107794 - Tokunaga; Yuzo ; et al.	2019-04-11
Liquid Developer And Method Of Producing Liquid Developer App 20190094734 - Hasegawa; Waka ; et al.	2019-03-28
Curable Liquid Developer And Method For Producing Curable Liquid Developer App 20180348658 - Tsuchida; Naohiko ; et al.	2018-12-06
Compound having azo skeleton, pigment dispersant, pigment composition, pigment dispersion, and toner Grant 10,087,328 - Murai , et al. October 2, 2	2018-10-02
Method Of Producing Curable Liquid Developer And Curable Liquid Developer App 20180210362 - Natori; Ryo ; et al.	2018-07-26
Method For Producing Curable Liquid Developer App 20180143546 - Hasegawa; Waka ; et al.	2018-05-24
Compound having azo skeleton structure, pigment-dispersing agent, pigment composition, pigment dispersion, and toner Grant 9,926,450 - Kawamura , et al. March 27, 2	2018-03-27
Method of producing curable liquid developer and curable liquid developer Grant 9,897,936 - Natori , et al. February 20, 2	2018-02-20
Ultraviolet-curable liquid developer and method of producing same Grant 9,880,482 - Hasegawa , et al. January 30, 2	2018-01-30
Curable liquid developer and image-forming method using curable liquid developer Grant 9,857,716 - Natori , et al. January 2, 2	2018-01-02
Compound having azo skeleton structure, pigment dispersant, pigment composition, pigment dispersion, and toner Grant 9,834,683 - Nishiura , et al. December 5, 2	2017-12-05
Polymer including phthalocyanine structure, method for producing the polymer, pigment composition, pigment dispersion, and toner Grant 9,777,087 - Murai , et al. October 3, 2	2017-10-03
Method of producing liquid developer Grant 9,740,118 - Hasegawa , et al. August 22, 2	2017-08-22
Method of producing a compound having a colorant structure, and toner containing a compound obtained by the production method Grant 9,715,187 - Mukumoto , et al. July 25, 2	2017-07-25
Compound having azo skeleton structure, pigment-dispersing agent, pigment composition, pigment dispersion, and toner Grant 9,625,845 - Mashida , et al. April 18, 2	2017-04-18
Pigment dispersion and toner Grant 9,618,867 - Toyoda , et al. April 11, 2	2017-04-11
Compound, pigment dispersing agent, pigment composition, pigment dispersion and toner containing said compound Grant 9,593,243 - Tsujii , et al. March 14, 2	2017-03-14
Method for producing compound having colorant structure at main chain terminal of polymer, and pigment dispersant, pigment composition, pigment dispersion and toner containing compound obtained by the production method Grant 9,556,290 - Nishiura , et al. January 31, 2	2017-01-31
Curable Liquid Developer And Image-forming Method Using Curable Liquid Developer App 20160349655 - Natori; Ryo ; et al.	2016-12-01
Ultraviolet-curable Liquid Developer And Method Of Producing Same App 20160349656 - Hasegawa; Waka ; et al.	2016-12-01
Method Of Producing Liquid Developer App 20160349637 - Hasegawa; Waka ; et al.	2016-12-01
Method Of Producing Curable Liquid Developer And Curable Liquid Developer App 20160349652 - Natori; Ryo ; et al.	2016-12-01
Compound having azo skeleton and pigment dispersant, pigment composition, pigment dispersion, and toner containing the compound Grant 9,470,995 - Seki , et al. October 18, 2	2016-10-18
Compound Having Azo Skeleton Structure, Pigment-dispersing Agent, Pigment Composition, Pigment Dispersion, And Toner App 20160280925 - Kawamura; Masashi ; et al.	2016-09-29
Polymer Including Phthalocyanine Structure, Method For Producing The Polymer, Pigment Composition, Pigment Dispersion, And Toner App 20160251465 - Murai; Yasuaki ; et al.	2016-09-01
Pigment Dispersion And Toner App 20160246200 - Toyoda; Takayuki ; et al.	2016-08-25
Compound Having Azo Skeleton, Pigment Dispersant, Pigment Composition, Pigment Dispersion, And Toner App 20160208106 - Murai; Yasuaki ; et al.	2016-07-21
Compound Having Azo Skeleton Structure, Pigment Dispersant, Pigment Composition, Pigment Dispersion, And Toner App 20160208105 - Nishiura; Chiaki ; et al.	2016-07-21
Novel Compound, Pigment Dispersing Agent, Pigment Composition, Pigment Dispersion And Toner Containing Said Compound App 20160185971 - Tsujii; Yuki ; et al.	2016-06-30
Azo compound, pigment dispersant containing the azo compound, pigment composition, pigment dispersion and toner Grant 9,298,118 - Kawamura , et al. March 29, 2	2016-03-29
Compound Having Azo Skeleton Structure, Pigment-dispersing Agent, Pigment Composition, Pigment Dispersion, And Toner App 20160070189 - Mashida; Ayano ; et al.	2016-03-10
Compound having bisazo dye skeleton, pigment composition containing the same, pigment dispersion, ink, and color filter resist composition Grant 9,249,308 - Hasegawa , et al. February 2, 2	2016-02-02
Toner Grant 9,229,345 - Ikeda , et al. January 5, 2	2016-01-05
Toner and method for manufacturing toner particles Grant 9,176,407 - Hasegawa , et al. November 3, 2	2015-11-03
Method For Producing Compound Having Colorant Structure At Main Chain Terminal Of Polymer, And Pigment Dispersant, Pigment Composition, Pigment Dispersion And Toner Containing Compound Obtained By The Production Method App 20150274853 - Nishiura; Chiaki ; et al.	2015-10-01
Method Of Producing A Compound Having A Colorant Structure, And Toner Containing A Compound Obtained By The Production Method App 20150277254 - Mukumoto; Kousuke ; et al.	2015-10-01
Cyan Toner Containing Compound Having Azo Skeleton App 20150093699 - Murai; Yasuaki ; et al.	2015-04-02
Magenta Toner Containing Compound Having Azo Skeleton App 20150079515 - Toyoda; Takayuki ; et al.	2015-03-19
Black Toner Containing Compound Having Azo Skeleton App 20150064618 - Hasegawa; Yuki ; et al.	2015-03-05
Toner App 20150056549 - Ikeda; Naotaka ; et al.	2015-02-26
Compound having bisazo skeleton, pigment dispersant containing the compound, pigment composition, pigment dispersion, ink and resist composition for color filter Grant 8,962,726 - Tanaka , et al. February 24, 2	2015-02-24
Novel Compound Having Azo Skeleton And Pigment Dispersant, Pigment Composition, Pigment Dispersion, And Toner Containing The Compound App 20150024321 - Seki; Masanori ; et al.	2015-01-22
Magenta toner containing compound having AZO skeleton Grant 8,936,894 - Toyoda , et al. January 20, 2	2015-01-20
Cyan toner containing compound having azo skeleton Grant 8,927,187 - Murai , et al. January 6, 2	2015-01-06
Azo Compound, Pigment Dispersant Containing The Azo Compound, Pigment Composition, Pigment Dispersion And Toner App 20150004538 - Kawamura; Masashi ; et al.	2015-01-01
Magenta Toner Containing Compound Having Azo Skeleton App 20150004539 - Watanabe; Taiki ; et al.	2015-01-01
Cyan Toner Containing Compound Having Azo Skeleton App 20140377697 - Nishiura; Chiaki ; et al.	2014-12-25
Black toner containing compound having azo skeleton Grant 8,916,318 - Hasegawa , et al. December 23, 2	2014-12-23
Black Toner Containing Compound Having Azo Skeleton App 20140356779 - Hasegawa; Waka ; et al.	2014-12-04
Novel Compound Having Bisazo Dye Skeleton, Pigment Composition Containing The Same, Pigment Dispersion, Ink, And Color Filter Resist Composition App 20140326931 - Hasegawa; Yuki ; et al.	2014-11-06
Toner And Method For Manufacturing Toner Particles App 20140308610 - Hasegawa; Yuki ; et al.	2014-10-16
Toner including compound having bisazo skeleton Grant 8,815,484 - Tanaka , et al. August 26, 2	2014-08-26
Compound Having Bisazo Skeleton, Pigment Dispersant Containing The Compound, Pigment Composition, Pigment Dispersion, Ink And Resist Composition For Color Filter App 20140235775 - Tanaka; Masatake ; et al.	2014-08-21
Magenta Toner Containing Compound Having Azo Skeleton App 20130224645 - Toyoda; Takayuki ; et al.	2013-08-29
Cyan Toner Containing Compound Having Azo Skeleton App 20130224646 - Murai; Yasuaki ; et al.	2013-08-29
Black Toner Containing Compound Having Azo Skeleton App 20130224644 - Hasegawa; Yuki ; et al.	2013-08-29
Toner Including Compound Having Bisazo Skeleton App 20130095421 - Tanaka; Masatake ; et al.	2013-04-18
Dye compound and ink containing dye compound Grant 7,981,205 - Hasegawa , et al. July 19, 2	2011-07-19
Dye compound and ink containing dye compound Grant 7,981,207 - Hasegawa , et al. July 19, 2	2011-07-19
Dye Compound And Ink Containing Dye Compound App 20090293765 - Hasegawa; Waka ; et al.	2009-12-03
Dye Compound And Ink Containing Dye Compound App 20090293764 - Hasegawa; Waka ; et al.	2009-12-03
Dye, dye production method and ink containing dye Grant 7,504,488 - Toyoda , et al. March 17, 2	2009-03-17
Novel Dye, Dye Production Method And Ink Containing Dye App 20070277701 - Toyoda; Takayuki ; et al.	2007-12-06
Erasable Ink, Method of Erasing Image Including the Same, and Method of Recycling Recording Medium Using the Erasing Method App 20070228005 - Hasegawa; Waka ; et al.	2007-10-04
Method Of Erasing Image, Image Erasing Apparatus, And Method Of Recycling Recording Medium App 20070159517 - Hashimoto; Yuichi ; et al.	2007-07-12
Image erasing method, apparatus therefor and recycling method for recording medium App 20060147717 - Hasegawa; Waka ; et al.	2006-07-06

uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.

While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.

All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.