Patent US7783403B2 successfully refreshed from Google Patents.
Patent US1763291A successfully refreshed from Google Patents.
Patent US3076232A successfully refreshed from Google Patents.
US3076232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for orienting polyethylene film
Assignee: EIDP Inc
•
Filing: 1961-07-06
•
Granted: 1963-02-05
•
Expires: 1981-07-06
Abstract
No abstract record available.
Inventors
- 👤 Dengler Carl Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:45
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/04; B29C55/06; Y; Y10; Y10S; Y10S264/00; Y10S264/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS FOR ORIENTING POLYETHYLENE FILM WHICH COMPRISES STRETCHING THE FILM AN AMOUNT FROM 2 TO 4 TIMES ITS ORIGINAL LENGTH IN THE DIRECTION OF ITS LENGTH WHILE MAINTAINING THE TEMPERATURE OF THE FILM AT T1, T1 BEING WITHIN THE RANGE FROM 50*C. TO 5*C. BELOW THE MELTING TEMPERATURE OF THE FILM, ANNEALING THE FILM AT A TEMPERATURE OF T2, T2 BEING WITHIN THE RANGE FROM T1 TO THE MELTING TEMPERATURE OF THE FILM, WHILE STRETCHING THE FILM IN THE DIRECTION OF ITS LENGTH AN AMOUNT OF AT LEAST 1.3 TIMES THE LENGTH AFTER THE FIRST STRETCHING, THE AMOUNT OF STRETCH OF FROM 2 TO 4 TIMES IN THE FIRST STRETCH-
Claim 2
Dependent Claim
111 words
A PROCESS FOR ORIENTING POLYETHYLENE FILM WHICH COMPRISES STRETCHING THE FILM AN AMOUNT FROM 2 TO 4 TIMES ITS ORIGINAL LENGTH IN THE DIRECTION OF ITS LENGTH WHILE MAINTAINING THE TEMPERATURE OF THE FILM AT T1, T1 BEING WITHIN THE RANGE FROM 50*C. TO 5*C. BELOW THE MELTING TEMPERATURE OF THE FILM, ANNEALING THE FILM AT A TEMPERATURE OF T2, T2 BEING WITHIN THE RANGE FROM T1 TO THE MELTING TEMPERATURE OF THE FILM, WHILE STRETCHING THE FILM IN THE DIRECTION OF ITS LENGTH AN AMOUNT OF AT LEAST 1.3 TIMES THE LENGTH AFTER THE FIRST STRETCHING, THE AMOUNT OF STRETCH OF FROM 2 TO 4 TIMES IN THE FIRST STRETCH-
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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |