Patent US1442052A successfully refreshed from Google Patents.
Patent US3067182A successfully refreshed from Google Patents.
US3067182A
Expired / Lapsed
US
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Isopropenylbenzyl chloride and polymers thereof
Assignee: Dow Chemical Co
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Filing: 1959-08-03
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Granted: 1962-12-04
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Expires: 1979-08-03
Abstract
No abstract record available.
Inventors
- 👤 Giffin D Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:13
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/10; C07C17/14; C07C17/25; C08; C08F; C08F10/00; C08F212/00; C08F212/02; C08F212/04; C08F212/14; C08F212/16; C08F212/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A SUBSTANTIALLY UNIFORM, VULCANIZABLE COPOLYMER OF FROM ABOUT 1 TO ABOUT 30 MOLE PERCENT OF ISOPROPENYLBENZYL CHLORIDE AND FROM ABOUT 99 TO ABOUT 70 MOLE PERCENT OF ISOBUTYLENE.
Claim 2
Dependent Claim
28 words
A SUBSTANTIALLY UNIFORM, VULCANIZABLE COPOLYMER OF FROM ABOUT 1 TO ABOUT 30 MOLE PERCENT OF ISOPROPENYLBENZYL CHLORIDE AND FROM ABOUT 99 TO ABOUT 70 MOLE PERCENT OF ISOBUTYLENE.
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) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |