Patent US2897228A successfully refreshed from Google Patents.
US2897228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organo-phosphorus condensation products
Assignee: Union Oil Company of California
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Filing: 1956-08-03
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Granted: 1959-07-28
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Expires: 1976-08-03
Abstract
No abstract record available.
Inventors
- 👤 Carleton B Scott
- 👤 William L Wasley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:00
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/04; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PHOSPHORUS-CONTAINING ORGANIC PRODUCT OBTAINED BY REACTING AN ALKYL TRITHIOMETAPHOSPHATE SELECTED FROM THE CLASS CONSISTING OF METHYL TRITHIOMETAPHOSPHATE AND ETHYL TRITHIOMETAPHOSPHATE WITH A HYDROCARBON SELECTED FROM THE CLASS CONSISTING OF (1) HYDROCARBON CONTAINING AT LEAST ONE BUT NOT MORE THAN TWO ETHYLENIC DOUBLE BONDS CONTAINED IN AN ALIPHATIC CHAIN CONTAINING FROM 2 TO 16 CARBON ATOMS, (2) HYDROCARBONS CONTAINING AT LEAST ONE BUT NOT MORE THAN TWO ETHYLENIC DOUBLE BONDS CONTAINED IN A 5-TO 6-CARBON ATOM CYCLOALIPHATIC RING, AND (3) COPOLYMERS OF ISOPRENE AND BUTADIENE, SAID REACTION BEING CARRIED OUT AT A TEMPERATURE BETWEEN ABOUT 10* AND ABOUT 250* C AND UNDER SUFFICIENT PRESSURE TO MAINTAIN SAID REACTANTS SUBSTANTIALLY IN THE LIQUID PHASE, SAID REACTANTS BEING CONTAINED IN SAID PRODUCT IN SUBSTANTIALLY EQUIMOLECULAR PROPORTIONS.
Claim 2
Dependent Claim
124 words
A PHOSPHORUS-CONTAINING ORGANIC PRODUCT OBTAINED BY REACTING AN ALKYL TRITHIOMETAPHOSPHATE SELECTED FROM THE CLASS CONSISTING OF METHYL TRITHIOMETAPHOSPHATE AND ETHYL TRITHIOMETAPHOSPHATE WITH A HYDROCARBON SELECTED FROM THE CLASS CONSISTING OF (1) HYDROCARBON CONTAINING AT LEAST ONE BUT NOT MORE THAN TWO ETHYLENIC DOUBLE BONDS CONTAINED IN AN ALIPHATIC CHAIN CONTAINING FROM 2 TO 16 CARBON ATOMS, (2) HYDROCARBONS CONTAINING AT LEAST ONE BUT NOT MORE THAN TWO ETHYLENIC DOUBLE BONDS CONTAINED IN A 5-TO 6-CARBON ATOM CYCLOALIPHATIC RING, AND (3) COPOLYMERS OF ISOPRENE AND BUTADIENE, SAID REACTION BEING CARRIED OUT AT A TEMPERATURE BETWEEN ABOUT 10* AND ABOUT 250* C AND UNDER SUFFICIENT PRESSURE TO MAINTAIN SAID REACTANTS SUBSTANTIALLY IN THE LIQUID PHASE, SAID REACTANTS BEING CONTAINED IN SAID PRODUCT IN SUBSTANTIALLY EQUIMOLECULAR PROPORTIONS.
References Cited (Backward Citations)
FR988962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |