US3272755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions of polymeric nu-vinylorganic compounds and perchloric acid
Assignee: GAF Chemicals Corp
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Filing: 1963-10-10
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Granted: 1966-09-13
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Expires: 1983-10-10
Abstract
No abstract record available.
Inventors
- 👤 Dimitry A Shiraeff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:28
CPC Classifications
C; C01; C01B; C01B11/00; C01B11/16; C08; C08K; C08K3/00; C08K3/16; Y; Y10; Y10S; Y10S149/00; Y10S149/118
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A STABLE AQUEOUS GEL OF PERCHLORIDE ACID CONSISTING ESSENTIALLY OF PERCHLORIC ACID OF AT LEAST ABOUT 30% CONCENTRATION IN COMBINATION WITH A POLYMERIC N-VINYL HETEROCYLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF N-VINYL LACTAMS, POLYMERIC, N-VINYL OXAZOLIDONES, POLYMERIC N-VINYL IMIDAZOLES, POLYMERIC N-VINYL MORPHOLONES AND COPOLYMERS THEREOF WITH DISSIMILAR VINYL MONOMERS, SAID POLYMERIC N-VINYL HETEROCYCLIC COMPOUND CONSTITUTING FROM 45 TO 55% BY WEIGHT OF SAID GEL.
Claim 2
Dependent Claim
67 words
A STABLE AQUEOUS GEL OF PERCHLORIDE ACID CONSISTING ESSENTIALLY OF PERCHLORIC ACID OF AT LEAST ABOUT 30% CONCENTRATION IN COMBINATION WITH A POLYMERIC N-VINYL HETEROCYLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF N-VINYL LACTAMS, POLYMERIC, N-VINYL OXAZOLIDONES, POLYMERIC N-VINYL IMIDAZOLES, POLYMERIC N-VINYL MORPHOLONES AND COPOLYMERS THEREOF WITH DISSIMILAR VINYL MONOMERS, SAID POLYMERIC N-VINYL HETEROCYCLIC COMPOUND CONSTITUTING FROM 45 TO 55% BY WEIGHT OF SAID GEL.
References Cited (Backward Citations)
US2460195A
Cited
US2826558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |