US3497482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of quaternary ammonium compounds
Assignee: Rohm and Haas Co
•
Filing: 1963-10-14
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Granted: 1970-02-24
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Jesse C H Hwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:40
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/56; D21H19/58; B; B01; B01J; B01J43/00; C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/60; C08F28/00; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/285; Y; Y10; Y10S; Y10S526/00; Y10S526/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A SOLID ADDITION POLYMER OF A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
10 words
A SOLID ADDITION POLYMER OF A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US3280179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |