US2933479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibers, pellicles and the like of crosslinked addition polymers of alkoxymethyl vinyl sulfides
Assignee: Rohm and Haas Co
•
Filing: 1956-05-29
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Granted: 1960-04-19
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Expires: 1976-05-29
Abstract
No abstract record available.
Inventors
- 👤 Charles H Mcburney
- 👤 Jr George A Richter
- 👤 Benjamin B Kine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:04
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F220/46; C08F20/00; C08F20/62; C08F28/00; C08F8/00; D; D01; D01F; D01F6/00; D01F6/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
AS AN ARTICLE OF MANUFACTURE, A SOLID POLYMERIC PRODUCT COMPRISING A CROSS-LINKED PRODUCT OF MOLECULES OF A LINEAR ADDITION COPOLYMER CONTAINING (A) ABOUT 0.2% TO 30% BY WEIGHT OF UNITS OF A VINYL SULFIDE OF THE FORMULA H2C=C(R)SR''OR" WHERE R IS SELECTED FROM THE GROUP CONSISTING OF H AND CH3, R'' IS SELECTED FROM THE GROUP CONSISTING OF -CH2-, -CH(CH3)-, AND -C(CH3)2-AND R" IS AN ALKYL GROUP AND (B) ABOUT 70 TO 99.8% BY WEIGHT OF UNITS DERIVED FROM OTHER COPOLYMERIZABLE MONOETHYLENICALLY UNSATURATED MOLECULES, THE TOTAL OF UNITS OF THE CLASSES A AND B ABOVE IN THE LINEAR COPOLYMER AMOUNTING TO 100 WEIGHT PERCENT, SAID LINEAR COPOLYMER MOLECULES BEING CROSS-LINKED IN SAID PRODUCT BY DISULFIDE LINKAGES FORMED BY HYDROYLSIS AND OXIDATION OF AT LEAST 0.2% BY WEIGHT OF THE A UNITS.
Claim 2
Dependent Claim
131 words
AS AN ARTICLE OF MANUFACTURE, A SOLID POLYMERIC PRODUCT COMPRISING A CROSS-LINKED PRODUCT OF MOLECULES OF A LINEAR ADDITION COPOLYMER CONTAINING (A) ABOUT 0.2% TO 30% BY WEIGHT OF UNITS OF A VINYL SULFIDE OF THE FORMULA H2C=C(R)SR''OR" WHERE R IS SELECTED FROM THE GROUP CONSISTING OF H AND CH3, R'' IS SELECTED FROM THE GROUP CONSISTING OF -CH2-, -CH(CH3)-, AND -C(CH3)2-AND R" IS AN ALKYL GROUP AND (B) ABOUT 70 TO 99.8% BY WEIGHT OF UNITS DERIVED FROM OTHER COPOLYMERIZABLE MONOETHYLENICALLY UNSATURATED MOLECULES, THE TOTAL OF UNITS OF THE CLASSES A AND B ABOVE IN THE LINEAR COPOLYMER AMOUNTING TO 100 WEIGHT PERCENT, SAID LINEAR COPOLYMER MOLECULES BEING CROSS-LINKED IN SAID PRODUCT BY DISULFIDE LINKAGES FORMED BY HYDROYLSIS AND OXIDATION OF AT LEAST 0.2% BY WEIGHT OF THE A UNITS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |