Patent US4907960A successfully refreshed from Google Patents.
Patent US2984593A successfully refreshed from Google Patents.
US2984593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uniaxially oriented polyvinyl chloride
Assignee: Monsanto Chemicals Ltd
•
Filing: 1959-08-31
•
Granted: 1961-05-16
•
Expires: 1979-08-31
Abstract
No abstract record available.
Inventors
- 👤 Robert A Isaksen
- 👤 Edmund H Merz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:41
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/229; D01; D01F; D01F6/00; D01F6/02; D01F6/08; D01F6/10; Y; Y10; Y10S; Y10S264/00; Y10S264/73; Y10S8/00; Y10S8/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A PROCESS FOR PROVIDING UNIAXIALLY STRETCHED POLYVINYL CHLORIDE MEMBERS HAVING TENSILE STRENGTHS OF GREATER THAN ABOUT 50,000 P.S.I. AND WHICH ARE ESSENTIALLY SHRINKRESISTANT WHEN SUBMERGED IN WATER HAVING A TEMPERATURE OF ABOUT 100*C., WHICH COMPRISES THE STEPS OF SUBJECTING MEMBERS OF CRYSTALLIZABLE POLYVINYL CHLORIDE CONTAINING A FINITE QUANTITY OF UP TO 20% BY WEIGHT OF A SOLVENT FOR SAID POLYVINYL CHLORIDE AND WHICH HAVE BEEN DEPOSITED FROM A SOLUTION TO (A) STRECHING 500-700% OF THE ORIGINAL LENGTH AT A RATE OF 10,000-30,000% PER MINUTE OF THE ORIGINAL LENGTH AND AT A TEMPERATURE OF 100-125*C., AND THEREAFTER (B) WHILE MAINTAINING SAID POLYVINYL CHLORIDE MEMBERS IN SAID STRECTHED CONDITION SUBJECTING THE SAID MEMBERS TO A TEMPERATURE OF 15-180*C. FOR A FINITE PERIOD OF UP TO 30 MINUTES.
Claim 2
Dependent Claim
125 words
A PROCESS FOR PROVIDING UNIAXIALLY STRETCHED POLYVINYL CHLORIDE MEMBERS HAVING TENSILE STRENGTHS OF GREATER THAN ABOUT 50,000 P.S.I. AND WHICH ARE ESSENTIALLY SHRINKRESISTANT WHEN SUBMERGED IN WATER HAVING A TEMPERATURE OF ABOUT 100*C., WHICH COMPRISES THE STEPS OF SUBJECTING MEMBERS OF CRYSTALLIZABLE POLYVINYL CHLORIDE CONTAINING A FINITE QUANTITY OF UP TO 20% BY WEIGHT OF A SOLVENT FOR SAID POLYVINYL CHLORIDE AND WHICH HAVE BEEN DEPOSITED FROM A SOLUTION TO (A) STRECHING 500-700% OF THE ORIGINAL LENGTH AT A RATE OF 10,000-30,000% PER MINUTE OF THE ORIGINAL LENGTH AND AT A TEMPERATURE OF 100-125*C., AND THEREAFTER (B) WHILE MAINTAINING SAID POLYVINYL CHLORIDE MEMBERS IN SAID STRECTHED CONDITION SUBJECTING THE SAID MEMBERS TO A TEMPERATURE OF 15-180*C. FOR A FINITE PERIOD OF UP TO 30 MINUTES.
References Cited (Backward Citations)
US2420565A
Cited
US2578899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |