US3121071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of 2-sulfo-1-sulfomethyl ethyl methacrylate
Assignee: Dow Chemical Co
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Filing: 1959-09-25
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Granted: 1964-02-11
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Expires: 1979-09-25
Abstract
No abstract record available.
Inventors
- 👤 David P Sheetz
- 👤 Stanley J Strycker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:17
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/62; D06P1/621; D06P1/622; D06P1/626; C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/07; C07C309/12; C08; C08F; C08F28/00; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/267; D06P1/52; D06P1/5207; D06P1/5214
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
THE POLYMER OF 2-SULFO-1-SULFOMETHYL ETHYL METHACRYLATE.
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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |