Obayashi; Shigeji

Patent Applications and Registrations

Patent applications and USPTO patent grants for Obayashi; Shigeji.The latest application filed is for "water retention material with water-absorbency".

Company Profile

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Obayashi; Shigeji - Hyogo JP
Obayashi; Shigeji - Akashi 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
Water retention material with water-absorbency Grant 5,075,373 - Takemori , et al. December 24, 1	1991-12-24
Process for producing a water-absorbent resin Grant 4,880,888 - Obayashi , et al. November 14, 1	1989-11-14
Process for producing a water-absorbent resin Grant 4,683,274 - Nakamura , et al. July 28, 1	1987-07-28
Water-swellable elastomer composition Grant 4,590,227 - Nakamura , et al. May 20, 1	1986-05-20
Water-absorbent resin having improved water-absorbency and improved water-dispersibility and process for producing same Grant 4,541,871 - Obayashi , et al. * September 17, 1	1985-09-17
Water-absorbent resin having improved water-absorbency and improved water-dispersibility and process for producing same Grant 4,507,438 - Obayashi , et al. March 26, 1	1985-03-26
Alkali metal acrylate or ammonium acrylate polymer excellent in salt solution-absorbency and process for producing same Grant 4,340,706 - Obayashi , et al. July 20, 1	1982-07-20
Process for regenerating catalyst Grant 4,070,305 - Obayashi , et al. January 24, 1	1978-01-24

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