US2930106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaskets
Assignee: American Felt Co
•
Filing: 1957-03-14
•
Granted: 1960-03-29
•
Expires: 1977-03-14
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Wrotnowski
- 👤 Jr Thomas J Gillick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:25
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/48; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/244; D06M15/256; F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/102; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2107; Y10T442/2549
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A FABRIC HAVING IMPROVED COLD-FLOW STABLE GASKETING ACTION COMPRISING A FELT-LIKE FABRIC, HAVING THREEDIMENSIONAL STABILITY AND FORMED OF CHEMICALLY RESISTANT FIBERS SELECTED FROM THE GROUP CONSISTING OF POLYESTER FIBERS, POLYAMIDE FIBERS, POLYACRYLONITRILE FIBERS, POLYACRYLATE FIBERS, METAL FIBERS AND MIXTURES THEREOF, IMPREGNATED WITH SOLID UNCURED POLYTETRAFLUORETHYLENE PARTICLES IN NON-FIBROUS FORM.
Claim 2
Dependent Claim
49 words
A FABRIC HAVING IMPROVED COLD-FLOW STABLE GASKETING ACTION COMPRISING A FELT-LIKE FABRIC, HAVING THREEDIMENSIONAL STABILITY AND FORMED OF CHEMICALLY RESISTANT FIBERS SELECTED FROM THE GROUP CONSISTING OF POLYESTER FIBERS, POLYAMIDE FIBERS, POLYACRYLONITRILE FIBERS, POLYACRYLATE FIBERS, METAL FIBERS AND MIXTURES THEREOF, IMPREGNATED WITH SOLID UNCURED POLYTETRAFLUORETHYLENE PARTICLES IN NON-FIBROUS FORM.
References Cited (Backward Citations)
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US2539329A
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US2686738A
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US2677872A
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US2813041A
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US2840881A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |