Doi; Ryouta

Patent Applications and Registrations

Patent applications and USPTO patent grants for Doi; Ryouta.The latest application filed is for "exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine".

Company Profile

0.9.5

Doi; Ryouta - Naka-gun JP
Doi; Ryouta - Naka JP
Doi; Ryouta - Naka-machi JP
Doi; Ryouta - Ibaraki 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
Exhaust Gas Purification Apparatus of Internal Combustion Engine and Catalyst for Purifying Exhaust Gas of Internal Combustion Engine App 20070204595 - HANAOKA; Hiroshi ; et al.	2007-09-06
Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine Grant 7,093,432 - Hanaoka , et al. August 22, 2	2006-08-22
Exhaust gas purifcation apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine App 20050089456 - Hanaoka, Hiroshi ; et al.	2005-04-28
Moisture removal device and method thereof for internal combustion engine use exhaust gas cleaning device Grant 6,823,659 - Hiratsuka , et al. November 30, 2	2004-11-30
Moisture removal device and method thereof for internal combustion engine use exhaust gas cleaning device App 20030172646 - Hiratsuka, Toshifumi ; et al.	2003-09-18
Exhaust gas purifying device for internal combustion engine App 20030154713 - Hiratsuka, Toshifumi ; et al.	2003-08-21
Method for purifying exhaust gas from internal combustion engines Grant 6,596,247 - Iizuka , et al. July 22, 2	2003-07-22
Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine App 20020159926 - Hanaoka, Hiroshi ; et al.	2002-10-31
Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine Grant 6,397,582 - Hanaoka , et al. June 4, 2	2002-06-04
Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas internal combustion engine Grant 6,161,378 - Hanaoka , et al. December 19, 2	2000-12-19
Method of manufacturing catalyst for cleaning exhaust gas released from internal combustion engine, and catalyst for the same Grant 5,972,828 - Doi , et al. October 26, 1	1999-10-26
Catalyst for purifying exhaust gas from internal combustion engine and purifying method thereof Grant 5,968,870 - Iizuka , et al. October 19, 1	1999-10-19
Fuel cell battery using acidic electrolyte Grant 4,612,261 - Tsukui , et al. September 16, 1	1986-09-16
Liquid fuel cell Grant 4,562,123 - Shimizu , et al. December 31, 1	1985-12-31

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.