Patent US3176409A successfully refreshed from Google Patents.
US3176409A
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Process and apparatus for steamtreating moldable fiber mat
Assignee: Weyerhaeuser Co
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Filing: 1961-03-06
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Granted: 1965-04-06
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Expires: 1981-03-06
Abstract
No abstract record available.
Inventors
- 👤 Harry A Mckeever
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:40
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/02; B29C35/04; B29C35/049; B29B; B29B13/00; B29B13/02; B29B13/023; B29C35/0227; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0854; D; D06; D06C; D06C7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE PROCESS OF HEATING A MODABLE FIBER MAT UNDER CONTROLLED CONDITIONS OF TEMPERATURE AND MOISTURE CONTENT COMPRISING PLACING SAID MAT IN A CHAMBER, SEALING SAID CHAMBER, INJECTING A HIGH PRESSURE STEAM INTO SAID CHAMBER TO REMOVE AMBIENT AIR FROM SAID CHAMBER, INJECTING LOW PRESSURE STEAM INTO SAID CHAMBER WHEREBY SAID MAT IS HEATED TO A DESIRED TEMPERATURE, UNSEALING SAID CHAMBER AND WITHDRAWING SAID HEATED MAT.
Claim 2
Dependent Claim
65 words
THE PROCESS OF HEATING A MODABLE FIBER MAT UNDER CONTROLLED CONDITIONS OF TEMPERATURE AND MOISTURE CONTENT COMPRISING PLACING SAID MAT IN A CHAMBER, SEALING SAID CHAMBER, INJECTING A HIGH PRESSURE STEAM INTO SAID CHAMBER TO REMOVE AMBIENT AIR FROM SAID CHAMBER, INJECTING LOW PRESSURE STEAM INTO SAID CHAMBER WHEREBY SAID MAT IS HEATED TO A DESIRED TEMPERATURE, UNSEALING SAID CHAMBER AND WITHDRAWING SAID HEATED MAT.
References Cited (Backward Citations)
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Cited
GB416552A
Cited
US2358344A
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US2451987A
Cited
US2756513A
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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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |