Patent US3351653A successfully refreshed from Google Patents.
US3351653A
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US
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Fluorine-containing hydroxy acids and esters and methods for the manufacture thereof
Assignee: Hooker Chemical Corp
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Filing: 1962-03-08
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Granted: 1967-11-07
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Expires: 1982-03-08
Abstract
No abstract record available.
Inventors
- 👤 Russell L K Carr
- 👤 Charles F Baranauckas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:27
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/01; C07C59/115; A; A01; A01N; A01N25/00; A01N25/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A COMPOSITION HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
7 words
A COMPOSITION HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2568619A
Cited
US2392974A
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US2452791A
Cited
US2456633A
Cited
US2668104A
Cited
US2754188A
Cited
US2996525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |