Patent US3227576A successfully refreshed from Google Patents.
US3227576A
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US
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Drafting film
Assignee: EIDP Inc
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Filing: 1960-05-17
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Granted: 1966-01-04
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Expires: 1980-05-17
Abstract
No abstract record available.
Inventors
- 👤 Albert Louis Van Stappen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:55
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08J2367/00; C08J2367/02; C08J2427/00; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A DIMENSIONALLY STABLE DRAFTING FILM COMPRISING A FLEXIBLE, BIAXIALLY-ORIENTED, MACROMOLECULAR POLYESTER FILM CORRESPONDING TO THEPOLYESTERIFICATION 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 COPOLYMER, AND (2) A THIN LAYER CONSISTING ESSENTIALLY OF RESIN PARTICLES RANGING FORM 0.1 TO 10 MICRONS IN SIZE, SAID RESIN SELECTED FROM THE GROUP CONSISTING OF PLYAMIDES ANDINTERPOLYAMIDES.
Claim 2
Dependent Claim
72 words
A DIMENSIONALLY STABLE DRAFTING FILM COMPRISING A FLEXIBLE, BIAXIALLY-ORIENTED, MACROMOLECULAR POLYESTER FILM CORRESPONDING TO THEPOLYESTERIFICATION 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 COPOLYMER, AND (2) A THIN LAYER CONSISTING ESSENTIALLY OF RESIN PARTICLES RANGING FORM 0.1 TO 10 MICRONS IN SIZE, SAID RESIN SELECTED FROM THE GROUP CONSISTING OF PLYAMIDES ANDINTERPOLYAMIDES.
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |