US3269855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing an amylaceous film upon the surface of a base material
Assignee: Scholtens Chemische Fabrieken NV
•
Filing: 1962-05-31
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Granted: 1966-08-30
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Expires: 1982-05-31
Abstract
No abstract record available.
Inventors
- 👤 Moes Geert
- 👤 Zijderveld Antonius Hendrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:19
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/02; C08B31/06; C08B31/066; D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/11; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/54; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF PRODUCING A WATER RESISTANT AMYLA CEOUS FILM UPON THE SURFACE OF PAPER, COMPRISING APPLYING AN AQUEOUS DISPERSION OF A WATER SOLUBLE STARCH PHOSPHATE ESTER AND AN AQUEOUS SOLUTION OF A POLYVALENIC METAL SALRT, SELECTED FROM THE GROUP CONSISTING OF WATER SOLUBLE ALUMINUM, CHROMIC, FERRIC, ZIRCONIUM AND STANNIC SALTS, TO THE SURFACE OF SAID PAPER, THUS FORMING AN INSOLUBLE FILM IN SITU, AND SUBSEQUENTLY DRYING THE PAPER.
Claim 2
Independent Claim
69 words
A METHOD OF PRODUCING A WATER RESISTANT AMYLA CEOUS FILM UPON THE SURFACE OF PAPER, COMPRISING APPLYING AN AQUEOUS DISPERSION OF A WATER SOLUBLE STARCH PHOSPHATE ESTER AND AN AQUEOUS SOLUTION OF A POLYVALENIC METAL SALRT, SELECTED FROM THE GROUP CONSISTING OF WATER SOLUBLE ALUMINUM, CHROMIC, FERRIC, ZIRCONIUM AND STANNIC SALTS, TO THE SURFACE OF SAID PAPER, THUS FORMING AN INSOLUBLE FILM IN SITU, AND SUBSEQUENTLY DRYING THE PAPER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |