US2573956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating nonfibrous cellulosic film and resulting product
Assignee: Wyeth Holdings LLC
•
Filing: 1949-06-28
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Granted: 1951-11-06
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Expires: 1969-06-28
Abstract
No abstract record available.
Inventors
- 👤 Jr John Harold Daniel
- 👤 Landes Chester Grey
- 👤 Pollard John Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:17
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J2301/00; C08J2301/06; C08J2423/00; C08J2423/02; C08J2423/04; C08J2423/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31986
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PROCESS FOR TREATING NON-FIBROUS CELLULOSIC FILM TO IMPROVE THE ANCHORING OF SAID FILM TO A SUBSEQUENTLY-APPLIED TOPCOAT, WHICH COMPRISES THE STEPS OF IMMERSING SAID CELLULOSIC FILM IN AN AQUEOUS DISPERSION OF AN ALIPHATIC POLYAMINEDIFUNCTIONAL HALOHYDRIN THERMOSETTING CATIONIC RESIN, REMOVING THE FILM, DRYING THE FILM, THEREBY PARTIALLY CURING THE AFFIXED RESIN, AND APPLYING THERETO A WATER-REPELLENT COATING COMPOSITION.
Claim 2
Dependent Claim
58 words
A PROCESS FOR TREATING NON-FIBROUS CELLULOSIC FILM TO IMPROVE THE ANCHORING OF SAID FILM TO A SUBSEQUENTLY-APPLIED TOPCOAT, WHICH COMPRISES THE STEPS OF IMMERSING SAID CELLULOSIC FILM IN AN AQUEOUS DISPERSION OF AN ALIPHATIC POLYAMINEDIFUNCTIONAL HALOHYDRIN THERMOSETTING CATIONIC RESIN, REMOVING THE FILM, DRYING THE FILM, THEREBY PARTIALLY CURING THE AFFIXED RESIN, AND APPLYING THERETO A WATER-REPELLENT COATING COMPOSITION.
References Cited (Backward Citations)
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US2320225A
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US2394009A
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US2479480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |