US3767790A
Expired / Lapsed
US
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Microorganisms
Assignee: National Patent Development Corp
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Filing: 1972-02-11
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Granted: 1973-10-23
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Expires: 1992-02-11
Abstract
Abstract MICROORGANISMS ARE ENTRAPPED IN A HYDROPHILIC ACRYLATE OR METHACRYLATE TO PROVIDE CONTROLLED RELEASE OR QUICK RELEASE OR TO PROVIDE A REGULATED TIME OF CONTACT WITH AN ENVIRONMENT ON WHICH THE MICROOGANISMS CAN ACT.
Inventors
- 👤 A Guttag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:09
CPC Classifications
C; C12; C12C; C12C11/00; C12C11/09; A; A21; A21D; A21D8/00; A21D8/02; A21D8/04; A23; A23C; A23C19/00; A23C19/02; A23C19/032; A23L; A23L29/00; A23L29/065; A61; A61K; A61K9/00; A61K9/14; A61K9/16; A61K9/1605; A61K9/1629; A61K9/1635; A61K9/20; A61K9/2004; A61K9/2022; A61K9/2027; A61K9/48; A61K9/4841; A61K9/4866; C12C11/07; C12C11/075; C12M; C12M25/00; C12M25/02; C12M25/16; C12N; C12N1/00; C12N1/04; C12N11/00; C12N11/02; C12N11/04; C12P; C12P7/00; C12P7/40; C12P7/44; C12P7/48; Y; Y10; Y10S; Y10S206/00; Y10S206/828; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1372; Y10T428/139; Y10T428/1393
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |