Patent US3100220A successfully refreshed from Google Patents.
US3100220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in process for making haloaliphatic phosphate esters
Assignee: Celanese Corp
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Filing: 1961-09-06
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Granted: 1963-08-06
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Expires: 1981-09-06
Abstract
No abstract record available.
Inventors
- 👤 Albert L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:06
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
IN THE PROCESS OF PRODUCING A HALOALIPHATIC PHOSPHATE BY THE REACTION OF AN OXIRANE COMPOUND AND A PHOSPHORYL HALIDE, THE IMPROVEMENT OF WHICH COMPRISES CARRYING OUT THE REACTION IN THE PRESENCE OF CATALYTIC AMOUNTS OF TITANIUM TETRACHLORIDE AND PCL3.
Claim 2
Dependent Claim
39 words
IN THE PROCESS OF PRODUCING A HALOALIPHATIC PHOSPHATE BY THE REACTION OF AN OXIRANE COMPOUND AND A PHOSPHORYL HALIDE, THE IMPROVEMENT OF WHICH COMPRISES CARRYING OUT THE REACTION IN THE PRESENCE OF CATALYTIC AMOUNTS OF TITANIUM TETRACHLORIDE AND PCL3.
References Cited (Backward Citations)
US2716657A
Cited
US2610978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-05 | 1967-02-04 | 1967-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-05 | 1971-02-04 | 1971-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-05 | 1975-02-04 | 1975-08-06 | $7700.00 | Window Closed / Lapsed |