US4684372B1
Expired / Lapsed
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US4684372B1 - - Google Patents
Assignee: PETROLEUM FERMENTATIONS
•
Filing: 1984-09-24
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Granted: 1990-05-01
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Expires: 2004-09-24
Abstract
No abstract record available.
Inventors
- 👤 E Hayes Michael
- 👤 R Hrebenar Kevin
- 👤 L Murphy Patricia
- 👤 E Futch Laurence Jr
- 👤 F Deal James Iii
- 👤 L Bolden Paul Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:21
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/32; C10L1/328; C09; C09K; C09K23/00; C09K23/017; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
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) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |