Patent US4508105A successfully refreshed from Google Patents.
Patent US2518519A successfully refreshed from Google Patents.
US2518519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of resinous materials
Assignee: Universal Oil Products Co
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Filing: 1948-05-29
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Granted: 1950-08-15
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Expires: 1968-05-29
Abstract
No abstract record available.
Inventors
- 👤 Herman S Bloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:38
CPC Classifications
C; C08; C08B; C08B15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A PROCESS FOR THE PRODUCTION OF A RESINOUS PRODUCT WHICH COMPRISES REACTING AT A TEMPERATURE OF F ROM ABOUT 25* TO ABOUT 300*C. A CARBOHYDRATE ETHER CONTAINING AT LEAST ONE ALLYL ETHER GROUP PER HEXOSE UNIT OF A HEXOSE CARBOHYDRATE REACTANT WITH AN UNSATURATED ESTER OF A DICARBOXYLIC DIENOPHILIC ACID ADDUCT OF A MIXTURE OF CYCLIC POLYOLEFINIC HYDROCARBONS HAVING A HIGHLY SUBSTITUTED DIENE CARBON ATOM SYSTEM RECOVERED FROM A CATALYST-HYDROCARBON COMPEX FORMED IN CATALYTIC CONJUNCT POLYMERIZATION OF HYDROCARBONS, SAID CYCLIC POLYOLEFINIC HYDROCARBONS HAVING BROMINE NUMBERS ABOVE ABOUT 140, MALEIC ANHYDRIDE VALUES OF FROM ABOUT 30 TO ABOUT 90, AND AN AVERAGE NUMBER OF OLEFINIC DOUBLE BONDS PER MOLECULE OF FROM ABOUT 2.5 TO ABOUT 4, OF WHICH FROM ABOUT 40 TO ABOUT 70% ARE CONJUGATED.
Claim 2
Dependent Claim
125 words
A PROCESS FOR THE PRODUCTION OF A RESINOUS PRODUCT WHICH COMPRISES REACTING AT A TEMPERATURE OF F ROM ABOUT 25* TO ABOUT 300*C. A CARBOHYDRATE ETHER CONTAINING AT LEAST ONE ALLYL ETHER GROUP PER HEXOSE UNIT OF A HEXOSE CARBOHYDRATE REACTANT WITH AN UNSATURATED ESTER OF A DICARBOXYLIC DIENOPHILIC ACID ADDUCT OF A MIXTURE OF CYCLIC POLYOLEFINIC HYDROCARBONS HAVING A HIGHLY SUBSTITUTED DIENE CARBON ATOM SYSTEM RECOVERED FROM A CATALYST-HYDROCARBON COMPEX FORMED IN CATALYTIC CONJUNCT POLYMERIZATION OF HYDROCARBONS, SAID CYCLIC POLYOLEFINIC HYDROCARBONS HAVING BROMINE NUMBERS ABOVE ABOUT 140, MALEIC ANHYDRIDE VALUES OF FROM ABOUT 30 TO ABOUT 90, AND AN AVERAGE NUMBER OF OLEFINIC DOUBLE BONDS PER MOLECULE OF FROM ABOUT 2.5 TO ABOUT 4, OF WHICH FROM ABOUT 40 TO ABOUT 70% ARE CONJUGATED.
References Cited (Backward Citations)
US2409633A
Cited
US2421876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |