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Patent US3067258A successfully refreshed from Google Patents.
US3067258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing organic phosphine oxides and olefins
Assignee: Wyeth Holdings LLC
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Filing: 1961-06-14
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Granted: 1962-12-04
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Expires: 1981-06-14
Abstract
No abstract record available.
Inventors
- 👤 Grayson Martin
- 👤 Keough Patricia Tarpey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:46
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2608; C07; C07C; C07C1/00; C07C1/20; C07C1/207; C07C1/213; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A METHOD OF PREPARING ORGANOPHOSPHORUS COMPOUNDS AND OLEFINS OF THE FORMULAE, RESPECTIVELY
Claim 2
Independent Claim
12 words
A METHOD OF PREPARING ORGANOPHOSPHORUS COMPOUNDS AND OLEFINS OF THE FORMULAE, RESPECTIVELY
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) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |