Company Filing History:

7 out of 1,297

Asahi Kasei Kogyo Kabushiki Kaisha

where one patent can have more than one assignee

Years Active: 1976-1989

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7 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4822489 - Aromatic polysulfone type resin hollow fiber membrane and a process for (1989-04-18),

2. 4267053 - Inline intravenous final filter unit (1981-05-12),

3. 4208508 - Semipermeable membranes of polyaryl ether sulfones (1980-06-17),

4. 4181694 - Method for producing hollow fibers of acrylonitrile polymers for (1980-01-01),

5. 4061821 - Semipermeable composite membranes (1977-12-06),

6. 4002567 - Ultrafiltration apparatus (1977-01-11),

7. 3933653 - Membranes of acrylonitrile polymers for ultrafilter and method for (1976-01-20),

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For the Inventor, By the Inventor

Yasuo Hashino

Location History:

Company Filing History:

Years Active: 1976-1989