Patent US3117165A successfully refreshed from Google Patents.
US3117165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted tertiary phosphine oxides
Assignee: Wyeth Holdings LLC
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Filing: 1962-04-26
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Granted: 1964-01-07
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Expires: 1982-04-26
Abstract
No abstract record available.
Inventors
- 👤 Epstein Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:47
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/53; C07F9/5304; C07F9/5333; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/38; C22B3/387; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A TERTIARY ALPHA-ALKOXYPHOSPHINE OXIDE OF THE FORMULA
Claim 2
Dependent Claim
7 words
A TERTIARY ALPHA-ALKOXYPHOSPHINE OXIDE OF THE FORMULA
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) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |