US3288763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl halides in vulcanization of elastomers
Assignee: Wyeth Holdings LLC
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Filing: 1963-06-04
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Granted: 1966-11-29
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Expires: 1983-06-04
Abstract
No abstract record available.
Inventors
- 👤 Waldron Thomas Fredrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:52
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08K5/0008; C08K5/0025; C08K5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
IN THE COMPOUNDING AND CURING OF A RUBBER STOCK FROM A SYNTHETIC, RUBBER-LIKE, VULCANIZABLE, ACTIVE-HALOGEN CONTAINING ELASTOMERIC POLYMER; THE IMPROVEMENT WHICH COMPRISES: DURING SAID COMPOUNDING, DISTRIBUTING THROUGH SAID POLYMER IN COMBINATION (A) FROM ABOUT ONE TO ABOUT TWENTY PARTS PER 100 PARTS OF COPOLYMER OF AT LEAST ONE AMMONIUM SALT OF AN ACID HAVING A PKA VALUE OF AT LEAST THREE AND (B) FROM ABOUT ONE TO ABOUT 25 PARTS PER 100 PARTS OF COPOLYMER OF AT LEAST ONE HALIDE SELECTED FROM THE GROUP CONSISTING OF THE ALKYL AND ALKYLENE HALIDES WHEREIN THE ALKYL MOIETY CONTAINS FROM ABOUT TWO TO ABOUT TWENTY CARBONS.
Claim 2
Dependent Claim
103 words
IN THE COMPOUNDING AND CURING OF A RUBBER STOCK FROM A SYNTHETIC, RUBBER-LIKE, VULCANIZABLE, ACTIVE-HALOGEN CONTAINING ELASTOMERIC POLYMER; THE IMPROVEMENT WHICH COMPRISES: DURING SAID COMPOUNDING, DISTRIBUTING THROUGH SAID POLYMER IN COMBINATION (A) FROM ABOUT ONE TO ABOUT TWENTY PARTS PER 100 PARTS OF COPOLYMER OF AT LEAST ONE AMMONIUM SALT OF AN ACID HAVING A PKA VALUE OF AT LEAST THREE AND (B) FROM ABOUT ONE TO ABOUT 25 PARTS PER 100 PARTS OF COPOLYMER OF AT LEAST ONE HALIDE SELECTED FROM THE GROUP CONSISTING OF THE ALKYL AND ALKYLENE HALIDES WHEREIN THE ALKYL MOIETY CONTAINS FROM ABOUT TWO TO ABOUT TWENTY CARBONS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |