US2829070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of synthetic linear polyester structures and product
Assignee: EIDP Inc
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Filing: 1955-04-27
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Granted: 1958-04-01
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Expires: 1975-04-27
Abstract
No abstract record available.
Inventors
- 👤 Osborn Robert Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:38
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/126; C08J2367/00; C08J2367/02; Y; Y10; Y10S; Y10S8/00; Y10S8/04; Y10T; Y10T428/00; Y10T428/31; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
A PROCESS FOR TREATING BIAXIALLY ORIENTED, BALANCED HEAT-SET POLYETHYLENE TEREPHTHALATE FILM WHICH COMPRISES SUBJECTING THE SURFACE OF SAID FILM TO THE ACTION OF GASEOUS CHLORINE IN THE PRESENCE OF ULTRA-VIOLET LIGHT HAVING A WAVE LENGTH NO GREATER THAN 3900 A. U., TO FORM A CHLORINATED POLYETHYLENE TEREPHTHALASTE FILM SURFACE.
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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |