Patent US2233726A successfully refreshed from Google Patents.
Patent US3267149A successfully refreshed from Google Patents.
US3267149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-hydroxybutyl phosphorus compounds
Assignee: Monsanto Research Corp
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Filing: 1962-07-13
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Granted: 1966-08-16
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Expires: 1982-07-13
Abstract
No abstract record available.
Inventors
- 👤 Albert Y Garner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:58
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/5004; C07F9/53; C07F9/5304; C08; C08K; C08K5/00; C08K5/49; C08K5/50; C08K5/51; C08K5/53; C08K5/5397; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2608; C10L1/2616; C10M2223/00; C10M2223/06; C10M2223/061; C10M2223/065; C10M2227/00; C10M2227/08; C10M2227/082
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
15 words
THE METHOD OF PREPARING ORGANOPHOSPHORUS COMPOUNDS WHICH COMPRISES CONTACTING A PHOSPHORUS-HALOGEN COMPOUND OF THE FORMULA
Claim 2
Independent Claim
15 words
THE METHOD OF PREPARING ORGANOPHOSPHORUS COMPOUNDS WHICH COMPRISES CONTACTING A PHOSPHORUS-HALOGEN COMPOUND OF THE FORMULA
Claim 3
Independent Claim
18 words
THE METHOD OF PREPARING DIPHENYL-4-HYDROXYBUTYLPHOSPHINE WHICH COMPRISES CONTACTING A DIPHENYLPHOSPHINOUS HALIDE WITH TETRAHYDROFURAN AND AN ALKALINE EARTH METAL.
Claim 4
Independent Claim
18 words
THE METHOD OF PREPARING DIPHENYL-4-HYDROXYBUTYLPHOSPHINE WHICH COMPRISES CONTACTING A DIPHENYLPHOSPHINOUS HALIDE WITH TETRAHYDROFURAN AND AN ALKALINE EARTH METAL.
References Cited (Backward Citations)
US2957931A
Cited
US3055861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |