US3258513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making porous and permeable sheet material
Assignee: Rogers Corp
•
Filing: 1962-09-05
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Granted: 1966-06-28
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Expires: 1982-09-05
Abstract
No abstract record available.
Inventors
- 👤 Richard C Berry
- 👤 Jerrold J Abell
- 👤 George R Traut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:56
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C44/00; B29C44/20; B29C44/30; B29C67/00; B29C67/20; B29C67/205; C; C08; C08J; C08J9/00; C08J9/24; D; D06; D06N; D06N3/00; D06N3/0002; D06N3/0015; D06N3/0025; D06N3/0086; D06N3/0088; D06N3/0093; B29L; B29L2007/00; B29L2009/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
THE METHOD OF MANUFACTURING A MICROPOROUS SHEET OF RESIN AND SIMULTANEOULSY IMPARTING A DESIRED SURFACE FINISH OR TEXTURE TO AT LEAST ONE SURFACE THEREOF DURING THE MANUFACTURE OF THE SHEET WITHOUT HARMING THE PERMEABLE POROUS CHARACTER OF THE SHEET WHEREIN A UNIFORM LAYER OF FINE GRANULAR THERMOPLASTIC RESINIS CARRIED BETWEEN UPPER AND LOWER RESILIETLY COMPRESSIBLE FIBROUS CARRIER SHEETS AND PASSED BETWEEN HEATED PLATES DEINING A PASSAGEWAY OF DIMINISHING THICKNESS TO APPLY HEAT AND PRESSURE TO SINTER THE GRANULES TOGETHER INTO A MICROPOROUS LAYER, THE IMPROVEMENT COMPRISING THE STEP OF INTERPOSING A SHEET ADAPTED TO IMPART A DESIRED SURFACE FINISH OR TEXTURE TO THE MICROPOROUS LAYER, BETWEEN THE MICROPOROUS LAYER AND SAID CARRIER SHEETS, SAID DESIRED SURFACE FINISH OR TEXTURE BEING APPLIED T THE MICROPOROUS LAYER DURING THE SINTERING OF THE MICROPOROUS LAYER.
Claim 2
Independent Claim
132 words
THE METHOD OF MANUFACTURING A MICROPOROUS SHEET OF RESIN AND SIMULTANEOULSY IMPARTING A DESIRED SURFACE FINISH OR TEXTURE TO AT LEAST ONE SURFACE THEREOF DURING THE MANUFACTURE OF THE SHEET WITHOUT HARMING THE PERMEABLE POROUS CHARACTER OF THE SHEET WHEREIN A UNIFORM LAYER OF FINE GRANULAR THERMOPLASTIC RESINIS CARRIED BETWEEN UPPER AND LOWER RESILIETLY COMPRESSIBLE FIBROUS CARRIER SHEETS AND PASSED BETWEEN HEATED PLATES DEINING A PASSAGEWAY OF DIMINISHING THICKNESS TO APPLY HEAT AND PRESSURE TO SINTER THE GRANULES TOGETHER INTO A MICROPOROUS LAYER, THE IMPROVEMENT COMPRISING THE STEP OF INTERPOSING A SHEET ADAPTED TO IMPART A DESIRED SURFACE FINISH OR TEXTURE TO THE MICROPOROUS LAYER, BETWEEN THE MICROPOROUS LAYER AND SAID CARRIER SHEETS, SAID DESIRED SURFACE FINISH OR TEXTURE BEING APPLIED T THE MICROPOROUS LAYER DURING THE SINTERING OF THE MICROPOROUS LAYER.
References Cited (Backward Citations)
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Cited
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US2287159A
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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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |