US3360448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for modifying polyester film bases using irradiation
Assignee: EIDP Inc
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Filing: 1963-12-02
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Granted: 1967-12-26
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Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Schneider Rudolf
- 👤 Haenisch Karl Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:55
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; B; B29; B29C; B29C59/00; B29C59/16; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0827; B29K; B29K2067/00; C08J2367/00; C08J2367/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR MODIFYING THE SURFACE OF A HYDROPHOBIC HIGHLY POLYMERIC POLYESTER SHAPED ARTICLE WHICH COMPRISES (A) TREATING THE SURFACE OF SUCH AN ARTICLE WITH AN ESSENTIALLY NEUTRAL TO WEAKLY ACIDIC SOLUTION OF AQUEOUS HYDROGEN PEROXIDE IN A VOLATILE ORGANIC SOLVENT THAT IS ESSENTIALLY A NON-SOLVENT FOR THE POLYESTER, AND (B) EXPOSING THE TREATED SURFACE OF SAID ARTICLE WHILE STILL IN A WET STATE WITH ULTRAVIOLET RADIATION.
Claim 2
Dependent Claim
67 words
A PROCESS FOR MODIFYING THE SURFACE OF A HYDROPHOBIC HIGHLY POLYMERIC POLYESTER SHAPED ARTICLE WHICH COMPRISES (A) TREATING THE SURFACE OF SUCH AN ARTICLE WITH AN ESSENTIALLY NEUTRAL TO WEAKLY ACIDIC SOLUTION OF AQUEOUS HYDROGEN PEROXIDE IN A VOLATILE ORGANIC SOLVENT THAT IS ESSENTIALLY A NON-SOLVENT FOR THE POLYESTER, AND (B) EXPOSING THE TREATED SURFACE OF SAID ARTICLE WHILE STILL IN A WET STATE WITH ULTRAVIOLET RADIATION.
References Cited (Backward Citations)
DE1078437B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |