US2723935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet material
Assignee: EIDP Inc
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Filing: 1954-10-01
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Granted: 1955-11-15
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Expires: 1974-10-01
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Rodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:13
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE PROCESS OF PREPARING NON-WOVEN SHEET MATERIAL COMPRISING FORMING A BATT OF LOOSELY BOUND POLYMERIC LINEAR TEREPHTHALATE ESTER FILAMENTS, DISTRIBUTING THROUGHOUT SAID BATT THE POLYMERIC REACTION PRODUCT OF A POLYALKYLENEETHER GLYCOL, AN ORGANIC DIIOCYANATE AND A CHAIN EXTENDING COMPOUND CONTAINING ACTIVE HYDROGEN ATOMS, HEATING AND PRESSING THE BATT TO CONSOLIDATE THE FILAMENTS AND SAID POLYMERIC REACTION PRODUCT INTO A UNITARY STRUCTURE.
Claim 2
Dependent Claim
61 words
THE PROCESS OF PREPARING NON-WOVEN SHEET MATERIAL COMPRISING FORMING A BATT OF LOOSELY BOUND POLYMERIC LINEAR TEREPHTHALATE ESTER FILAMENTS, DISTRIBUTING THROUGHOUT SAID BATT THE POLYMERIC REACTION PRODUCT OF A POLYALKYLENEETHER GLYCOL, AN ORGANIC DIIOCYANATE AND A CHAIN EXTENDING COMPOUND CONTAINING ACTIVE HYDROGEN ATOMS, HEATING AND PRESSING THE BATT TO CONSOLIDATE THE FILAMENTS AND SAID POLYMERIC REACTION PRODUCT INTO A UNITARY STRUCTURE.
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) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |