Koizumi; Ryoichi

Patent Applications and Registrations

Patent applications and USPTO patent grants for Koizumi; Ryoichi.The latest application filed is for "liquid ejection head and liquid ejection method".

Company Profile

0.13.3

Koizumi; Ryoichi - Yokohama JP
Koizumi; Ryoichi - Yokohama-shi JP
Koizumi, Ryoichi - Kanagawa-ken JP
Koizumi; Ryoichi - Atsugi 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
Liquid ejection head and liquid ejection method Grant 7,967,413 - Koizumi , et al. June 28, 2	2011-06-28
Liquid Ejection Head And Liquid Ejection Method App 20080291244 - Koizumi; Ryoichi ; et al.	2008-11-27
Liquid jet recording head having controller for controlling temperature distribution Grant 6,598,952 - Ishinaga , et al. July 29, 2	2003-07-29
Recording Apparatus Having Abnormality Determination Based On Temperature And Average Ejection Duty Cycle App 20020149657 - Ishinaga, Hiroyuki ; et al.	2002-10-17
Liquid jet recording substrate, recording head and apparatus using same App 20010004263 - Ishinaga, Hiroyuki ; et al.	2001-06-21
Substrate having a built-in temperature detecting element, and ink jet apparatus having the same Grant 6,234,599 - Ishinaga , et al. May 22, 2	2001-05-22
Ink jet recording head having an electric discharge path for releasing static electricity and recording apparatus using same Grant 6,074,041 - Imanaka , et al. June 13, 2	2000-06-13
Printing head, and printer and printing method using the printing head Grant 5,790,140 - Koizumi , et al. August 4, 1	1998-08-04
Ink jet recording head with adjustable temperature sensor and ink jet recording system having the same Grant 5,760,797 - Koizumi , et al. June 2, 1	1998-06-02
Recording head which detects temperature of an element chip and corrects for variations in that detected temperature, and cartridge and apparatus having such a head Grant 5,696,543 - Koizumi , et al. December 9, 1	1997-12-09
Recording apparatus to which recording head is detachably mounted Grant 5,638,097 - Takayanagi , et al. June 10, 1	1997-06-10
Ink jet recording head and apparatus having a protective member formed above energy generators for generating energy used to discharge ink Grant 5,491,505 - Suzuki , et al. February 13, 1	1996-02-13
Liquid jet recording apparatus Grant 5,488,395 - Takayanagi , et al. January 30, 1	1996-01-30
Remaining ink detecting device and ink jet head cartridge Grant 5,329,304 - Koizumi , et al. July 12, 1	1994-07-12
Liquid jet recording head having a substrate with minimized electrode overlap Grant 5,212,503 - Saito , et al. May 18, 1	1993-05-18
Ink jet substrate including plural temperature sensors and heaters Grant 5,175,565 - Ishinaga , et al. December 29, 1	1992-12-29

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