US3067482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet material and process of making same
Assignee: EIDP Inc
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Filing: 1959-08-24
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Granted: 1962-12-11
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Expires: 1979-08-24
Abstract
No abstract record available.
Inventors
- 👤 Hollowell Joseph Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:57
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; D; D04; D04H; D04H1/00; D04H1/04; D04H1/06; D04H1/40; D04H1/54; D04H1/56; D04H1/58; D04H1/587; D04H1/64; B01D2239/00; B01D2239/04; B01D2239/0464; B01D2239/0471; B01D2239/0478; B01D2239/10; B01D2239/12; B01D2239/1291; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23986
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE METHOD OF MAKING SUPPLE MOISTURE-PERMEABLE SHEET MATERIAL WHICH COMPRISES THE FOLLOWING STEPS IN SEQUENCE, FORMING A FIBROUS MAT COMPRISING SYNTHETIC FIBERS, IMPREGNATING SAID MAT THROPUGHOUT WITH A SOLUTION OF A SYNTHETIC POLYMER, EXTRACTING SUBSTANTIALLY ALL OF THE SOLVENT FROM THE IMPREGNATING SOLUTION BY TREATING THE IMPREGNATED MAT WITH A LIQUID WHICH IS MISCIBLE WITH THE SOLVENT OF SAID SOLUTION AND IS A NON-SOLVENT FOR SAID FIBERS AND SAID SYNTHETIC POLYMER, AND DRYING THE IMPREGNATED MAT, WHEREBY THE IMPREGNANT IS DEPOSITED THROUGHOUT SAID MAT IN THE FORM OF A MATRIX FOR SAID FIBERS AND THERE IS SUBSTANTIALLY NO ADHESION BETWEEN SAID FIBERS AND SAID MATRIX.
Claim 2
Independent Claim
105 words
THE METHOD OF MAKING SUPPLE MOISTURE-PERMEABLE SHEET MATERIAL WHICH COMPRISES THE FOLLOWING STEPS IN SEQUENCE, FORMING A FIBROUS MAT COMPRISING SYNTHETIC FIBERS, IMPREGNATING SAID MAT THROPUGHOUT WITH A SOLUTION OF A SYNTHETIC POLYMER, EXTRACTING SUBSTANTIALLY ALL OF THE SOLVENT FROM THE IMPREGNATING SOLUTION BY TREATING THE IMPREGNATED MAT WITH A LIQUID WHICH IS MISCIBLE WITH THE SOLVENT OF SAID SOLUTION AND IS A NON-SOLVENT FOR SAID FIBERS AND SAID SYNTHETIC POLYMER, AND DRYING THE IMPREGNATED MAT, WHEREBY THE IMPREGNANT IS DEPOSITED THROUGHOUT SAID MAT IN THE FORM OF A MATRIX FOR SAID FIBERS AND THERE IS SUBSTANTIALLY NO ADHESION BETWEEN SAID FIBERS AND SAID MATRIX.
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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |