US3597381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color stabilized aqueous dispersions of iminated vinyl addition polymers and process for preparing same
Assignee: Reichhold Chemicals Inc
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Filing: 1970-01-21
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Granted: 1971-08-03
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Expires: 1990-01-21
Abstract
Abstract AQUEOUS DISPERSIONS OF IMINATED VINYL ADDITION POLYMERS CONTAINING SMALL AMOUNTS OF AN AMMONIA DERIVATIVE COMPOUND, SUCH AS HYDROXYLAMINE HYDROCHLORIDE, HYDRAZINES, SEMICARBAZIDES, AND THEIR DERIVATIVES, EXHIBIT IMPROVED COLOR STABILITY.
Inventors
- 👤 Robert A Ripley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:33
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |