US3022192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving the adhesion of flat-shaped bodies made of polyterephthalic acid glycol esters
Assignee: Kalle GmbH and Co KG
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Filing: 1959-02-25
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Granted: 1962-02-20
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Expires: 1979-02-25
Abstract
No abstract record available.
Inventors
- 👤 Brandt Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:36
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; C08J5/121; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31725; Y10T428/31736; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A PROCESS FOR INCREASING THE ABILITY OF A SHEET OF POLYTEREPHTHALIC ACID GLYCOL ESTER TO ADHERE TO FILMS OF ANOTHER HIGH-MOLECULAR FILM-FORMING ORGANIC MATERIAL WHICH COMPRISES TREATING THE SURFACE OF SAID SHEET WITH AN AQUEOUS SOLUTION OF TRICHLOROACETIC ACID AND A CHROMIUM COMPOUND OF THE GROUP CONSISTING OF CHROMIC ACID, A WATER-SOLUBLE SALT OF CHROMIC ACID, A WATER-SOLUBLE SALT OF A POLYCHROMIC ACID, AND A WATER-SOLUBLE SALT IN WHICH THE CHROMIUM IS IN THE CATION, AND WHERE SAID CHROMINUM COMPOUND IS A WATER-SOLUBLE CHROMIUM SALT IN WHICH THE CHROMIUM IS IN THE CATION THE SOLVENT IS ESSENTIALLY TOLUENE CONTAINING 8 TO 10 PARTS OF WATER BY WEIGHT FOR EVERY 850 PARTS OF TOLUENCE ALONG WITH SUFFCIENT ALCOHOL TO RENDER THE TOLUENE AND WATER MISCIBLE; AND DRYING SAID SHEET TO FORM A SURFACE THEREON WHICH CONTAINS THE APPLIED CHROMIUM COMPOUND AND FREE TRICHLOROACETIC ACID.
Claim 2
Dependent Claim
143 words
A PROCESS FOR INCREASING THE ABILITY OF A SHEET OF POLYTEREPHTHALIC ACID GLYCOL ESTER TO ADHERE TO FILMS OF ANOTHER HIGH-MOLECULAR FILM-FORMING ORGANIC MATERIAL WHICH COMPRISES TREATING THE SURFACE OF SAID SHEET WITH AN AQUEOUS SOLUTION OF TRICHLOROACETIC ACID AND A CHROMIUM COMPOUND OF THE GROUP CONSISTING OF CHROMIC ACID, A WATER-SOLUBLE SALT OF CHROMIC ACID, A WATER-SOLUBLE SALT OF A POLYCHROMIC ACID, AND A WATER-SOLUBLE SALT IN WHICH THE CHROMIUM IS IN THE CATION, AND WHERE SAID CHROMINUM COMPOUND IS A WATER-SOLUBLE CHROMIUM SALT IN WHICH THE CHROMIUM IS IN THE CATION THE SOLVENT IS ESSENTIALLY TOLUENE CONTAINING 8 TO 10 PARTS OF WATER BY WEIGHT FOR EVERY 850 PARTS OF TOLUENCE ALONG WITH SUFFCIENT ALCOHOL TO RENDER THE TOLUENE AND WATER MISCIBLE; AND DRYING SAID SHEET TO FORM A SURFACE THEREON WHICH CONTAINS THE APPLIED CHROMIUM COMPOUND AND FREE TRICHLOROACETIC ACID.
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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |