US2876187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of polyester structure
Assignee: EIDP Inc
•
Filing: 1956-09-06
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Granted: 1959-03-03
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Expires: 1976-09-06
Abstract
No abstract record available.
Inventors
- 👤 Leon E Wolinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:22
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J2367/00; C08J2367/02; Y; Y10; Y10S; Y10S522/00; Y10S522/91; Y10S8/00; Y10S8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
THE PROCESS OF TREATING FILM OF SYNTHETIC LINEAR POLYESTERS OF A GLYCOL OF THE SERIES HO(CH2)NOH WHEREIN N IS A WHOLE NUMBER WITHIN THE RANGE OF 2-10 INCLUSIVE AND ACIDS SELECTED FROM TH EGROUPE CONSISTING OF (1) TEREPHTHALIC ACID AND (2) A MIXTURE OF TEREPHTHATIC ACID WITH TO 20% BY WEIGHT BASED ON THE TOTAL WEIGHT OF ACIDS, OF A SECOND ACID SELECTED FROM THE GROUPE CONSISTING OF ISOPHTHALIC ACID, DIBENZOIC ACID, HEXAHYDROTEREPTHALIC ACID, ADIPIC ACID, SEBACIC ACID, AZAELIC ACIDS, NAPHTHALIC ACID, 2,5-DIMETHYL TEREPHTHALIC ACID AND BIS-PCARBOXPHENOXY ETHANE, WHICH COMPRISE SUBJECTING THE SURFACE OF SAID FILM TO THE ACTION OF A GASEOUS ATMOSPHERE CONSISTING OF FROM 0.5% TO 40%, BY VOLUME, OF OZONE
Claim 2
Dependent Claim
113 words
THE PROCESS OF TREATING FILM OF SYNTHETIC LINEAR POLYESTERS OF A GLYCOL OF THE SERIES HO(CH2)NOH WHEREIN N IS A WHOLE NUMBER WITHIN THE RANGE OF 2-10 INCLUSIVE AND ACIDS SELECTED FROM TH EGROUPE CONSISTING OF (1) TEREPHTHALIC ACID AND (2) A MIXTURE OF TEREPHTHATIC ACID WITH TO 20% BY WEIGHT BASED ON THE TOTAL WEIGHT OF ACIDS, OF A SECOND ACID SELECTED FROM THE GROUPE CONSISTING OF ISOPHTHALIC ACID, DIBENZOIC ACID, HEXAHYDROTEREPTHALIC ACID, ADIPIC ACID, SEBACIC ACID, AZAELIC ACIDS, NAPHTHALIC ACID, 2,5-DIMETHYL TEREPHTHALIC ACID AND BIS-PCARBOXPHENOXY ETHANE, WHICH COMPRISE SUBJECTING THE SURFACE OF SAID FILM TO THE ACTION OF A GASEOUS ATMOSPHERE CONSISTING OF FROM 0.5% TO 40%, BY VOLUME, OF OZONE
References Cited (Backward Citations)
US2647868A
Cited
US2715075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |