US3428680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyquaternary ammonium salts of polymerized epichlorohydrin
Assignee: Procter and Gamble Co
•
Filing: 1964-01-03
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Granted: 1969-02-18
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Expires: 1984-01-03
Abstract
No abstract record available.
Inventors
- 👤 George B Walker
- 👤 Cushman M Cambre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:03
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/3707; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/333; C08G65/33303; C08G65/33306; C11D3/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A POLYQYATERNARY AMMONIUM SALT OF A POLYMERIZED EPICHLOROHYDRIN, THE POLYQUATERNARY AMMONIUM SALT HAVING THE FOLLOWING UNIT STRUCTURE
Claim 2
Dependent Claim
17 words
A POLYQYATERNARY AMMONIUM SALT OF A POLYMERIZED EPICHLOROHYDRIN, THE POLYQUATERNARY AMMONIUM SALT HAVING THE FOLLOWING UNIT STRUCTURE
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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |