US2196239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of diacetyl in butter cultures
Assignee: IOWA STATE COLLEGE RES FOUND
•
Filing: 1937-08-02
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Granted: 1940-04-09
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Expires: 1957-08-02
Abstract
No abstract record available.
Inventors
- 👤 Werkman Chester Hamlin
- 👤 Hammer Bernard Wernick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:00
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/20; A; A23; A23C; A23C15/00; A23C15/02; A23C15/06; A23C15/065; C12P; C12P7/00; C12P7/24; C12P7/26; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/885
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) | 1943-04-09 | 1943-10-09 | 1944-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-09 | 1947-10-09 | 1948-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-09 | 1951-10-09 | 1952-04-09 | $7700.00 | Window Closed / Lapsed |