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Patent US2777872A successfully refreshed from Google Patents.
US2777872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated organic compounds
Assignee: EIDP Inc
•
Filing: 1953-11-02
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Granted: 1957-01-15
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Expires: 1973-11-02
Abstract
No abstract record available.
Inventors
- 👤 Shacklett Comer Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:20
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/89; Y; Y10; Y10S; Y10S526/00; Y10S526/923
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
THE COMPOUND OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
6 words
THE COMPOUND OF THE GENERAL FORMULA:
Claim 3
Dependent Claim
6 words
THE COMPOUNDS OF THE GENERAL FORMULA:
Claim 4
Dependent Claim
6 words
THE COMPOUNDS OF THE GENERAL FORMULA:
References Cited (Backward Citations)
US2548428A
Cited
US2697656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |