US2899713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orientation of polyethylene
Assignee: —
•
Filing: —
•
Granted: 1959-08-18
•
Expires: 1976-08-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:38
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/18; B29K; B29K2067/00; Y; Y10; Y10S; Y10S264/00; Y10S264/68; Y10S8/00; Y10S8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
THE PRECESS FOR SIMMULTANEOUSLY HEAT-SETTING AND ORIENTING POLYETHYLENE TEREPHTHALATE FILM WHICH COMPRISES ROLLING OUT UNORIENTED, CRYSTALLINE POLYETHLENE TEREPHTHALATE FILM, HAVING A DENSITY OF AT LEAST 1.36, WITH HEATED PRESSURE ROLLS MAINTAINED AT A TEMPERATURE WITHIN THE RANGE OF FROM 150*-190*C.
Claim 2
Dependent Claim
40 words
THE PRECESS FOR SIMMULTANEOUSLY HEAT-SETTING AND ORIENTING POLYETHYLENE TEREPHTHALATE FILM WHICH COMPRISES ROLLING OUT UNORIENTED, CRYSTALLINE POLYETHLENE TEREPHTHALATE FILM, HAVING A DENSITY OF AT LEAST 1.36, WITH HEATED PRESSURE ROLLS MAINTAINED AT A TEMPERATURE WITHIN THE RANGE OF FROM 150*-190*C.
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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |