Patent US2764504A successfully refreshed from Google Patents.
US2764504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating process and products therefrom
Assignee: EIDP Inc
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Filing: 1952-08-28
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Granted: 1956-09-25
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Expires: 1972-08-28
Abstract
No abstract record available.
Inventors
- 👤 Henning W Jacobson
- 👤 Paul L Salzberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:58
CPC Classifications
D; D06; D06M; D06M14/00; D06M14/02; D06M14/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE PROCESS FOR THE TREATMENT OF CELLULOSE ARTICLES HAVING ONE DIMENSION LARGE WITH RESPECT TO ANOTHER WHEREIN THE CELLULOSE ARTICLE IS IMPREGNATED WITH A VINYLIDENEFORMAMIDE MONOMER CONTAINING ONLY HYDROGEN, ONE NITROGEN, ONE OXYGEN, UP TO SIX CARBONS, AND ONE CARBON CARBON UNSATURATION AND HAVING HYDROGEN ON AN ATOM ALPHA TO THE CARBONYL, SAID MONOMER IS POLYMERIZED IN SITU AND THE SURFACE POLYMER IS REMOVED BY EXTRACTION WITH A SOLVENT FOR THE POLYMER, NON-SOLVENT FOR THE TREATED CELLULOSE, WHEREBY A CELLULOSE ARTICLE CONTAINING WHOLLY INTERNALLY DEPOSITED VINYLIDENEFORMAMIDEPOLYMER IS OBTAINED.
Claim 2
Dependent Claim
88 words
THE PROCESS FOR THE TREATMENT OF CELLULOSE ARTICLES HAVING ONE DIMENSION LARGE WITH RESPECT TO ANOTHER WHEREIN THE CELLULOSE ARTICLE IS IMPREGNATED WITH A VINYLIDENEFORMAMIDE MONOMER CONTAINING ONLY HYDROGEN, ONE NITROGEN, ONE OXYGEN, UP TO SIX CARBONS, AND ONE CARBON CARBON UNSATURATION AND HAVING HYDROGEN ON AN ATOM ALPHA TO THE CARBONYL, SAID MONOMER IS POLYMERIZED IN SITU AND THE SURFACE POLYMER IS REMOVED BY EXTRACTION WITH A SOLVENT FOR THE POLYMER, NON-SOLVENT FOR THE TREATED CELLULOSE, WHEREBY A CELLULOSE ARTICLE CONTAINING WHOLLY INTERNALLY DEPOSITED VINYLIDENEFORMAMIDEPOLYMER IS OBTAINED.
References Cited (Backward Citations)
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Cited
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US2314968A
Cited
US2343095A
Cited
US2415564A
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US2406454A
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FR970791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |