US3239430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for cultivating aerobic microorganisms
Assignee: Kaken Pharmaceutical Co Ltd
•
Filing: 1963-02-07
•
Granted: 1966-03-08
•
Expires: 1983-02-07
Abstract
No abstract record available.
Inventors
- 👤 Aiba Shuichi
- 👤 Kubo Hideo
- 👤 Shirato Shiro
- 👤 Esumi Shinichiro
- 👤 Miyazaki Yoshio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:35
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/12; C12M; C12M29/00; C12M29/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A PROCESS FOR CULTIVATING AEROBIC MICROORGANISMS BY FERMENTATION IN INDUSTRIAL SCALE EMPLOYING PURIFIED AND STERILIZED AIR, THE IMPROVEMENT COMPRISING PURIFYING THE AIR BY PASSING THE AIR THROUGH A SPONGY MATERIAL CONSISTING ESSENTIALLY OF A POLYVINYL ACETAL HAVING HOLES OF SIZES RANGING FROM ABOUT 2 TO ABOUT 200 MICRONS WHICH HAS BEEN TREATED WITH A THERMOSETTING ARTIFICIAL RESIN SELECTED FROM THE GROUP CONSISTING OF MELAMINE RESIN, PHENOL RESIN AND FURAN-RESIN WHEREBY RESISTANCE TO STEAM AT TEMPERATURES RANGING FROM ABOUT 100*C. TO 130*C. IS IMPARTED TO SAID SPONGY MATERIAL.
Claim 2
Dependent Claim
88 words
IN A PROCESS FOR CULTIVATING AEROBIC MICROORGANISMS BY FERMENTATION IN INDUSTRIAL SCALE EMPLOYING PURIFIED AND STERILIZED AIR, THE IMPROVEMENT COMPRISING PURIFYING THE AIR BY PASSING THE AIR THROUGH A SPONGY MATERIAL CONSISTING ESSENTIALLY OF A POLYVINYL ACETAL HAVING HOLES OF SIZES RANGING FROM ABOUT 2 TO ABOUT 200 MICRONS WHICH HAS BEEN TREATED WITH A THERMOSETTING ARTIFICIAL RESIN SELECTED FROM THE GROUP CONSISTING OF MELAMINE RESIN, PHENOL RESIN AND FURAN-RESIN WHEREBY RESISTANCE TO STEAM AT TEMPERATURES RANGING FROM ABOUT 100*C. TO 130*C. IS IMPARTED TO SAID SPONGY MATERIAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |