US3170901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel quaternary ammonium compounds and polymers thereof
Assignee: Rohm and Haas Co
•
Filing: 1960-12-27
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Granted: 1965-02-23
•
Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Melamed Sidney
- 👤 Ruth H Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:37
CPC Classifications
C; C08; C08F; C08F16/00; C08F16/12; C08F16/14; C08F16/28; C08F20/00; C08F20/62; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/17; Y10S260/18; Y10S526/00; Y10S526/923
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
21 words
A WATER-SOLUBLE POLYMER OF MONOETHYLENICALLY UNSATURATED MONOMERS COMPRISING AT LEAST 5 MOLE PERCENT OF AT LEAST ONE MONOMER OF THE 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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |