Patent US3790225A successfully refreshed from Google Patents.
US3065104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film coating process
Assignee: EIDP Inc
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Filing: 1959-09-10
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Granted: 1962-11-20
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Expires: 1979-09-10
Abstract
No abstract record available.
Inventors
- 👤 Kane William Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:13
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/052; C08J2301/00; C08J2301/06; C08J2401/00; C08J2401/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN THE PROCESS OF PRODUCING COATED SHEET WRAPPING MATERIAL WHEREIN AN ANCHORING AGENT EFFECTIVE TO SECURE A MOISTUREPROOFING COATING TO A BASE OF REGENERATED CELLULOSE FILM AND SAID BASE IS THEREAFTER COATED WITH A MOISTUREFILM AND SAID BASE IS THEREAFTER COATED WITH A MOISTUREPROOFING COATING COMPOSITION FOR REGENERATED CELLULOSE FILM, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN THE BASE FILM FROM AN AQUEOUS SOLUTION MAINTAINED AT A PH OF NOT OVER 4, AN ANCHORING AGENT CONSISTING ESSENTIALLY OF (1) FROM 0.01 TO 0.08% BY WEIGHT, BASED ON THE WEIGHT OF DRY CELLULOSE, OF A METAL SALT FROM THE GROUP CONSISTING OF THE ALUMINUM SALTS AND THE CALCIUM SALTS OF GLUCONIC, AND ACRYLIC ACIDS, AND (2) FROM 0.15 TO 0.78% BY WEIGHT OF AN ANIONIC THERMOSETTING RESIN FROM THE GROUP CONSISTING OF UREA-FORMALDEHYDE AND MELAMINE-FORMALDEHYDE ANIONIC RESINS AND DRYING THE RESULTING BASE FILM AT A TEMPERATURE EFFECTIVE TO CONVERT THE RESIN TO THE THERMOSET STAGE.
Claim 2
Dependent Claim
153 words
IN THE PROCESS OF PRODUCING COATED SHEET WRAPPING MATERIAL WHEREIN AN ANCHORING AGENT EFFECTIVE TO SECURE A MOISTUREPROOFING COATING TO A BASE OF REGENERATED CELLULOSE FILM AND SAID BASE IS THEREAFTER COATED WITH A MOISTUREFILM AND SAID BASE IS THEREAFTER COATED WITH A MOISTUREPROOFING COATING COMPOSITION FOR REGENERATED CELLULOSE FILM, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN THE BASE FILM FROM AN AQUEOUS SOLUTION MAINTAINED AT A PH OF NOT OVER 4, AN ANCHORING AGENT CONSISTING ESSENTIALLY OF (1) FROM 0.01 TO 0.08% BY WEIGHT, BASED ON THE WEIGHT OF DRY CELLULOSE, OF A METAL SALT FROM THE GROUP CONSISTING OF THE ALUMINUM SALTS AND THE CALCIUM SALTS OF GLUCONIC, AND ACRYLIC ACIDS, AND (2) FROM 0.15 TO 0.78% BY WEIGHT OF AN ANIONIC THERMOSETTING RESIN FROM THE GROUP CONSISTING OF UREA-FORMALDEHYDE AND MELAMINE-FORMALDEHYDE ANIONIC RESINS AND DRYING THE RESULTING BASE FILM AT A TEMPERATURE EFFECTIVE TO CONVERT THE RESIN TO THE THERMOSET STAGE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |