Patent US2074830A successfully refreshed from Google Patents.
Patent US3078259A successfully refreshed from Google Patents.
US3078259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylbenzylsulfonium monomers and polymers
Assignee: Dow Chemical Co
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Filing: 1959-10-02
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Granted: 1963-02-19
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Expires: 1979-10-02
Abstract
No abstract record available.
Inventors
- 👤 Melvin J Hatch
- 👤 Elmer L Mcmaster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:12
CPC Classifications
C; C07; C07D; C07D333/00; C07D333/02; C07D333/46; C07C; C07C381/00; C07C381/12; C07D327/00; C07D327/02; C07D327/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A WATER SOLUBLE MONOMERIC VINYLBENZYL SULFONIUM COMPOUND HAVING THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
11 words
A WATER SOLUBLE MONOMERIC VINYLBENZYL SULFONIUM COMPOUND HAVING THE FOLLOWING FORMULA:
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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |