Patent US3047191A successfully refreshed from Google Patents.
Patent US2676159A successfully refreshed from Google Patents.
US2676159A
Expired / Lapsed
US
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Process using activated silicate clay in styrene-alkyd reaction
Assignee: Individual
•
Filing: 1951-05-22
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Granted: 1954-04-20
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Expires: 1971-05-22
Abstract
No abstract record available.
Inventors
- 👤 Armitage Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:44
CPC Classifications
C; C09; C09D; C09D125/00; C09D125/02; C09D125/04; C09D125/08; C09D125/14; C08; C08F; C08F283/00; C08F283/01; C09D151/00; C09D151/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR PRODUCING A STYRENE-OIL COPOLYMER WHICH COMPRISES HEATING TOGETHER STYRENE AND A CASTOR OIL MODIFIED ALKYD IN PROPORTIONS SUBSTANTIALLY EQUIVALENT TO THE FOLLOWING: 875 PARTS OF CASTOR OIL MODIFIED ALKYD AND 600 PARTS OF STYRENE IN THE PRESENCE OF 12 PARTS OF FULLER''S EARTH AT A TEMPERATURE OF FROM ABOUT 130* C. TO ABOUT 170* C. FOR A PERIOD OF ABOUT 1.5 HOURS.
Claim 2
Dependent Claim
65 words
A PROCESS FOR PRODUCING A STYRENE-OIL COPOLYMER WHICH COMPRISES HEATING TOGETHER STYRENE AND A CASTOR OIL MODIFIED ALKYD IN PROPORTIONS SUBSTANTIALLY EQUIVALENT TO THE FOLLOWING: 875 PARTS OF CASTOR OIL MODIFIED ALKYD AND 600 PARTS OF STYRENE IN THE PRESENCE OF 12 PARTS OF FULLER''S EARTH AT A TEMPERATURE OF FROM ABOUT 130* C. TO ABOUT 170* C. FOR A PERIOD OF ABOUT 1.5 HOURS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |