US2598090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moistureproof protective membrane material and method of making same
Assignee: RCA Corp
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Filing: 1950-01-31
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Granted: 1952-05-27
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Expires: 1970-01-31
Abstract
No abstract record available.
Inventors
- 👤 Yung Ashun
- 👤 William P Lowden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:21
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/02; H04R7/04; H04R7/06; H04R7/10; D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/227; E; E21; E21B; E21B3/00; E21B3/02; E21B3/04; Y; Y10; Y10T; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/164; Y10T442/169; Y10T442/30; Y10T442/3854; Y10T442/3886
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
A MOISTURE-PROOF, MEMBRANE MATERIAL COMPRISING A SHEET OF WOVEN FABRIC COMPOSED OF A SUPERPOLYAMIDE TO ONE SURFACE OF WHICH IS LAMINATED A SHEET OF WATER-PROOF MATERIAL SELECTED FROM THE CLASS CONSISTING OF POLYETHYLENE AND POLYTETRAFLUOROETHYLENE AND HAVING ANOTHER SURFACE SEALED WITH A COATING OF A MATERIAL CONSISTING ESSENTIALLY OF POLYVINYL CHLORIDE AND ACRYLONITRILE.
Claim 2
Dependent Claim
53 words
A MOISTURE-PROOF, MEMBRANE MATERIAL COMPRISING A SHEET OF WOVEN FABRIC COMPOSED OF A SUPERPOLYAMIDE TO ONE SURFACE OF WHICH IS LAMINATED A SHEET OF WATER-PROOF MATERIAL SELECTED FROM THE CLASS CONSISTING OF POLYETHYLENE AND POLYTETRAFLUOROETHYLENE AND HAVING ANOTHER SURFACE SEALED WITH A COATING OF A MATERIAL CONSISTING ESSENTIALLY OF POLYVINYL CHLORIDE AND ACRYLONITRILE.
Claim 3
Independent Claim
93 words
A METHOD OF MAKING A MOISTURE-PROOF, MEMBRANE MATERIAL COMPRISING LAMINATING TO ONE SIDE OF A SHEET OF WOVEN SUPERPOLYAMIDE FABRIC A THIN, FLEXIBLE SHEET OF WATER-PROOF MATERIAL SELECTED FROM THE CLASS CONSISTING OF POLYETHYLENE AND POLYTETRAFLUOROETHYLENE BY PRESSING SAID SHEETS TOGETHER AT A TEMPERATURE ABOVE THE SOFTENING POINT OF SAID WATER-PROOF MATERIAL, COATING THE OTHER EXPOSED SURFACE OF THE FABRIC WITH A SOLUTION COMPRISING POLYVINYL CHLORIDE AND ACRYLONITRILE IN VOLATILE ORGANIC SOLVENTS, PERMITTING THE COATED SHEET TO DRY AT ROOM TEMPERATURE, AND THEN HEATING AT ELEVATED TEMPERATURE TO DRIVE OFF ALL RESIDUAL SOLVENT.
Claim 4
Independent Claim
93 words
A METHOD OF MAKING A MOISTURE-PROOF, MEMBRANE MATERIAL COMPRISING LAMINATING TO ONE SIDE OF A SHEET OF WOVEN SUPERPOLYAMIDE FABRIC A THIN, FLEXIBLE SHEET OF WATER-PROOF MATERIAL SELECTED FROM THE CLASS CONSISTING OF POLYETHYLENE AND POLYTETRAFLUOROETHYLENE BY PRESSING SAID SHEETS TOGETHER AT A TEMPERATURE ABOVE THE SOFTENING POINT OF SAID WATER-PROOF MATERIAL, COATING THE OTHER EXPOSED SURFACE OF THE FABRIC WITH A SOLUTION COMPRISING POLYVINYL CHLORIDE AND ACRYLONITRILE IN VOLATILE ORGANIC SOLVENTS, PERMITTING THE COATED SHEET TO DRY AT ROOM TEMPERATURE, AND THEN HEATING AT ELEVATED TEMPERATURE TO DRIVE OFF ALL RESIDUAL SOLVENT.
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) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |