KOKEN LTD.
Patent Applications and Registrations
Patent applications and USPTO patent grants for KOKEN LTD..The latest application filed is for "disposable mask".
Company Profile
6.30.26
Trademarks
- KOKEN LTD. - Tokyo JP
- KOKEN LTD. - Chiyoda-ku, Tokyo N/A JP
- Koken Ltd - Tokyo JP
- Koken Ltd. - Chiyoda-Ku JP
- Koken Ltd. - all of JP
Trademarks
Patent Activity
| Patent | Date |
|---|---|
| Disposable Mask App 20210386135 - SHIRAISHI; Kohei ; et al. | 2021-12-16 |
| Sheet of microfiber assembly Grant 10,815,587 - Fukasawa , et al. October 27, 2 | 2020-10-27 |
| Mask provided with latch Grant 10,638,802 - Shibata | 2020-05-05 |
| Local air cleaner Grant 10,478,874 - Suzuki , et al. Nov | 2019-11-19 |
| Air blowing device Grant 10,295,207 - Fukiura , et al. | 2019-05-21 |
| Mask Provided With Latch App 20190133219 - SHIBATA; Shinnosuke | 2019-05-09 |
| Local air cleaning apparatus Grant 10,197,302 - Suzuki , et al. Fe | 2019-02-05 |
| Local air cleaning apparatus Grant 10,161,645 - Suzuki , et al. Dec | 2018-12-25 |
| Respiratory protection device Grant 10,010,728 - Mashiko July 3, 2 | 2018-07-03 |
| Protective Mask App 20180078796 - TAKEUCHI; Hironobu | 2018-03-22 |
| Respiratory protection device Grant 9,901,758 - Furuichi , et al. February 27, 2 | 2018-02-27 |
| Local clean zone forming apparatus Grant 9,791,161 - Fujishiro , et al. October 17, 2 | 2017-10-17 |
| Air Blowing Device App 20170198929 - FUKIURA; Kazuma ; et al. | 2017-07-13 |
| Air blowing devices aligned in width direction Grant 9,644,855 - Fukiura , et al. May 9, 2 | 2017-05-09 |
| Voice transmitter Grant 9,592,410 - Kanno , et al. March 14, 2 | 2017-03-14 |
| Purified air discharge device Grant 9,410,710 - Suzuki , et al. August 9, 2 | 2016-08-09 |
| Air cleaning apparatus and method for predicting breakthrough time for the same Grant 9,333,378 - Ishikawa , et al. May 10, 2 | 2016-05-10 |
| Voice Transmitter App 20160001109 - KANNO; Ryo ; et al. | 2016-01-07 |
| Local Air Cleaner App 20150306641 - Suzuki; Taketo ; et al. | 2015-10-29 |
| Air Blower And Protective Suit Including The Same App 20150297920 - TAKEUCHI; Hironobu ; et al. | 2015-10-22 |
| Protective Garment App 20150216250 - Takeuchi; Hironobu ; et al. | 2015-08-06 |
| Supply valve for air respirator Grant 9,050,478 - Takeuchi June 9, 2 | 2015-06-09 |
| Purified Air Discharge Device App 20150128541 - Suzuki; Taketo ; et al. | 2015-05-14 |
| Respiratory Protection Device App 20150107596 - Mashiko; Yoshimitsu | 2015-04-23 |
| Local Air Cleaning Apparatus App 20150059298 - Suzuki; Taketo ; et al. | 2015-03-05 |
| Respiratory Protection Device App 20150034080 - Furuichi; Ryohei ; et al. | 2015-02-05 |
| Local Air Cleaning Apparatus App 20140366498 - Suzuki; Taketo ; et al. | 2014-12-18 |
| Air Cleaning Apparatus And Method For Predicting Breakthrough Time For The Same App 20130327335 - Ishikawa; Shingo ; et al. | 2013-12-12 |
| Air Blowing Device App 20130095743 - Fukiura; Kazuma ; et al. | 2013-04-18 |
| Supply Valve For Air Respirator App 20130047991 - Takeuchi; Hironobu | 2013-02-28 |
| Antimicrobial composition, process for preparing the same, and utilization thereof Grant 8,349,346 - Imai , et al. January 8, 2 | 2013-01-08 |
| Local Clean Zone Forming Apparatus App 20120322356 - Fujishiro; Yuki ; et al. | 2012-12-20 |
| Mask device with blower Grant 8,225,792 - Kuriyama July 24, 2 | 2012-07-24 |
| Sheet Of Microfiber Assembly, And Method And Apparatus For Making The Same App 20110159765 - Fukasawa; Yasuhiko ; et al. | 2011-06-30 |
| System for decomposing organic compound Grant 7,722,830 - Kimura , et al. May 25, 2 | 2010-05-25 |
| Antimicrobial Composition, Process For Preparing The Same, And Utilization Thereof App 20100124562 - Imai; Hiroshi ; et al. | 2010-05-20 |
| Mask Device With Blower App 20100083967 - Kuriyama; Satoshi | 2010-04-08 |
| Toxic Gas Exposure Preventing System For Anatomic Practice Room App 20090156112 - Kubota; Yuji ; et al. | 2009-06-18 |
| System for decomposing organic compound Grant 7,364,710 - Kimura , et al. April 29, 2 | 2008-04-29 |
| Breathing simulator for evaluation test of respirator App 20070259322 - Yuasa; Hisashi ; et al. | 2007-11-08 |
| Breathing apparatus Grant 7,195,015 - Kuriyama March 27, 2 | 2007-03-27 |
| System for decomposing organic compound App 20060182671 - Kimura; Kazushi ; et al. | 2006-08-17 |
| Washing apparatus for endoscope Grant 6,928,686 - Tomooka , et al. August 16, 2 | 2005-08-16 |
| Electrostatic filter Grant 5,935,303 - Kimura August 10, 1 | 1999-08-10 |
| Agent for inhibiting proliferation of human malignant tumor cells Grant 4,963,358 - Tajima October 16, 1 | 1990-10-16 |
| Agent for inhibiting proliferation of human malignant tumor cells Grant 4,810,495 - Tajima March 7, 1 | 1989-03-07 |
| Process for preparing an inhibiting agent against proliferation of animals malignant tumor cells Grant 4,595,657 - Tajima June 17, 1 | 1986-06-17 |
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