Patent US3107140A successfully refreshed from Google Patents.
US3107140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of fibers and filaments of linear polyesters having improved properties
Assignee: Hoechst AG
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Filing: 1961-08-08
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Granted: 1963-10-15
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Expires: 1981-08-08
Abstract
No abstract record available.
Inventors
- 👤 Kurzke Herbert
- 👤 Sattler Helmut
- 👤 Stix Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:57
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/62; C; C08; C08L; C08L67/00; C08L67/02; D02; D02J; D02J1/00; D02J1/22; D02J1/228; D02J13/00; D02J13/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A PROCESS FOR THE MANUFACTURE OF FILAMENTOUS STRUCTURES OF POLYETHYLENE TEREPHTHALATE WHICH HAVE AN IMPROVED DYEABILITY WHICH COMPRISES STRETCHING THE FILAMENTOUS STRUCTURES TO A MULTIPLE OF THEIR ORIGINAL LENGTH,
Claim 2
Dependent Claim
29 words
A PROCESS FOR THE MANUFACTURE OF FILAMENTOUS STRUCTURES OF POLYETHYLENE TEREPHTHALATE WHICH HAVE AN IMPROVED DYEABILITY WHICH COMPRISES STRETCHING THE FILAMENTOUS STRUCTURES TO A MULTIPLE OF THEIR ORIGINAL LENGTH,
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) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |