US3030173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the uniform preparation of shaped structures such as filaments or foils from high-melting linear polyesters
Assignee: Hoechst AG
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Filing: 1959-09-30
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Granted: 1962-04-17
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Expires: 1979-09-30
Abstract
No abstract record available.
Inventors
- 👤 Kurzke Herbert
- 👤 Sattler Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:39
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/221; D01; D01F; D01F6/00; D01F6/58; D01F6/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN THE PROCESS FOR PRODUCING SHAPED STRUCTURES OF POLYETHYLENE TEREPHTHALATE, IN WHICH PROCESS THE STRUCTURES ARE DRAWN OFF A SHAPING DEVICE, THEN SUBJECTED TO A CONTROLLED STRETCHING, THE STEP WHICH COMPRISES REMOVING PREORIENATION OF THE STRUCTURES FORMED DURING THE DRAWING OFF STEP BY HEATING THE SHAPED STRUCTURES AFTER THEY HAVE BEEN DRAWN OFF AND BEFORE THE CONTROLLED STRETCHING TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 70*C. TO ABOUT 100*C.
Claim 2
Dependent Claim
70 words
IN THE PROCESS FOR PRODUCING SHAPED STRUCTURES OF POLYETHYLENE TEREPHTHALATE, IN WHICH PROCESS THE STRUCTURES ARE DRAWN OFF A SHAPING DEVICE, THEN SUBJECTED TO A CONTROLLED STRETCHING, THE STEP WHICH COMPRISES REMOVING PREORIENATION OF THE STRUCTURES FORMED DURING THE DRAWING OFF STEP BY HEATING THE SHAPED STRUCTURES AFTER THEY HAVE BEEN DRAWN OFF AND BEFORE THE CONTROLLED STRETCHING TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 70*C. TO ABOUT 100*C.
References Cited (Backward Citations)
US2596128A
Cited
US2578899A
Cited
US2917779A
Cited
US2931068A
Cited
US2952879A
Cited
US2928132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |