US3100799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 1-hydroxyalkyl-phosphine oxides
Assignee: Wyeth Holdings LLC
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Filing: 1962-07-20
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Granted: 1963-08-13
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Expires: 1982-07-20
Abstract
No abstract record available.
Inventors
- 👤 Michael M Rauhut
- 👤 Andrew M Semsel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:57
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2608; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/53; C07F9/5304; C07F9/5333
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
METHOD WHICH COMPRISES BRINGING INTO REACTIVE CONTACT, IN THE PRESENCE OF AN INERT ORGANIC SOLVENT, ELEMENTAL PHOSPHORUS AND AN ORGANOMETALLIC COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
24 words
METHOD WHICH COMPRISES BRINGING INTO REACTIVE CONTACT, IN THE PRESENCE OF AN INERT ORGANIC SOLVENT, ELEMENTAL PHOSPHORUS AND AN ORGANOMETALLIC COMPOUND 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) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |