Patent US2964423A successfully refreshed from Google Patents.
US2964423A
Expired / Lapsed
US
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Drafting films
Assignee: EIDP Inc
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Filing: 1958-11-19
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Granted: 1960-12-13
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Expires: 1978-11-19
Abstract
No abstract record available.
Inventors
- 👤 Albert Louis Van Stappen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:57
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/02; B05D7/00; B05D7/02; B05D7/04; B05D7/50; B05D7/52; B05D7/53; B32; B32B; B32B27/00; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; G; G03; G03C; G03C1/00; G03C1/76; G03C1/95; C08J2367/00; C08J2367/02; C08J2475/00; C08J2475/02; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/259; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2998; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A DIMENSIONALLY STABLE DRAFTING FILM COMPRISING A FLEXIBLE, BIAXIALLY-ORIENTED, HIGHLY POLYMERIC POLYESTER FILM SUBSTANTIALLY COMPOSED OF THE POLYESTERIFICATION PRODUCT OF A DICARBOXYLIC ACID AND A DIHYDRIC ALCOHOL HAVING ON AT LEAST ONE SURFACE, IN ORDER, (1) A THIN LAYER OF AN ADHERENT FILM-FORMING, ESSENTIALLY HYDROPHOBIC ORGANIC VINYLIDENE CHLORIDE COPOLYMER CONTAINING AT LEAST 35% BY WEIGHT OF VINYLIDENE CHLORIDE, AND (2) A THIN LAYER OF A WATER-SOLUBLE RESIN TAKEN FROM THE GROUP CONSISTING OF UREA-FORMALDEHYDE, THIOUREA-FORMALDEHYDE AND MELAMINE-FORMALDEHYDE RESINS AND THEIR CATIONIC-MODIFIED, ALIPHATIC MONO- AND POLYAMINE-MODIFIED AND GUANIDINE-MODIFIED FORMS CONTAINING (A) A LIQUID GLYCOL PLASTICIZING AGENT AND (B) UNIFORMLY DISPERSED, FINELY-DIVIDED DISCRETE PARTICLES OF A WATER-INSOLUBLE, TRANSLUCENCE-PRODUCTING, SOLID INORGANIC TOOTHING AGENT HAVING AN AVERAGE PARTICLE SIZE FROM 0.1 TO 10.0 MICRONS.
Claim 2
Dependent Claim
120 words
A DIMENSIONALLY STABLE DRAFTING FILM COMPRISING A FLEXIBLE, BIAXIALLY-ORIENTED, HIGHLY POLYMERIC POLYESTER FILM SUBSTANTIALLY COMPOSED OF THE POLYESTERIFICATION PRODUCT OF A DICARBOXYLIC ACID AND A DIHYDRIC ALCOHOL HAVING ON AT LEAST ONE SURFACE, IN ORDER, (1) A THIN LAYER OF AN ADHERENT FILM-FORMING, ESSENTIALLY HYDROPHOBIC ORGANIC VINYLIDENE CHLORIDE COPOLYMER CONTAINING AT LEAST 35% BY WEIGHT OF VINYLIDENE CHLORIDE, AND (2) A THIN LAYER OF A WATER-SOLUBLE RESIN TAKEN FROM THE GROUP CONSISTING OF UREA-FORMALDEHYDE, THIOUREA-FORMALDEHYDE AND MELAMINE-FORMALDEHYDE RESINS AND THEIR CATIONIC-MODIFIED, ALIPHATIC MONO- AND POLYAMINE-MODIFIED AND GUANIDINE-MODIFIED FORMS CONTAINING (A) A LIQUID GLYCOL PLASTICIZING AGENT AND (B) UNIFORMLY DISPERSED, FINELY-DIVIDED DISCRETE PARTICLES OF A WATER-INSOLUBLE, TRANSLUCENCE-PRODUCTING, SOLID INORGANIC TOOTHING AGENT HAVING AN AVERAGE PARTICLE SIZE FROM 0.1 TO 10.0 MICRONS.
References Cited (Backward Citations)
US2718476A
Cited
US2779684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |