Patent FR2178175A1 successfully refreshed from Google Patents.
US3101243A
Expired / Lapsed
US
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Pre-heat process for molding cork blocks
Assignee: Sheller Manuf Corp
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Filing: 1959-09-25
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Granted: 1963-08-20
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Expires: 1979-09-25
Abstract
No abstract record available.
Inventors
- 👤 Richard H Hawkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:15
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/02; Y; Y10; Y10S; Y10S264/00; Y10S264/65; Y10S425/00; Y10S425/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE METHOD OF MOLDING CORK COMPOSITION BLOCKS COMPRISING MIXING GRANULATED CORK WITH A THERMOSETTABLE BINDER, PRE-HEATING SAID MIXTURE WHILE AGITATING THE SAME TO A TEMPERATURE AT WHICH THE BINDER WILL BECOME PERMANENTLY INFUSIBLE WHEN MAINTAINED AT SAID TEMPERATURE FOR A PREDETERMINED TIME PERIOD, PRE-HEATING A MOLD TO SUBSTANTIALLY SAID TEMPERATURE, PLACING SAID HEATED MIXTURE IN SAID HEATED MOLD, COMPRESSING SAID MIXTURE IN SAID MOLD BEFORE SAID PREDETERMINED TIME PEERIOD HAS ELAPSED AND HEATING THE SAID MOLD AND MIXTURE SO AS TO MAINTAIN SUBSTANTIALLY SAID TEMPERATURE FOR SAID PREDETERMINED TIME PERIOD.
Claim 2
Independent Claim
90 words
THE METHOD OF MOLDING CORK COMPOSITION BLOCKS COMPRISING MIXING GRANULATED CORK WITH A THERMOSETTABLE BINDER, PRE-HEATING SAID MIXTURE WHILE AGITATING THE SAME TO A TEMPERATURE AT WHICH THE BINDER WILL BECOME PERMANENTLY INFUSIBLE WHEN MAINTAINED AT SAID TEMPERATURE FOR A PREDETERMINED TIME PERIOD, PRE-HEATING A MOLD TO SUBSTANTIALLY SAID TEMPERATURE, PLACING SAID HEATED MIXTURE IN SAID HEATED MOLD, COMPRESSING SAID MIXTURE IN SAID MOLD BEFORE SAID PREDETERMINED TIME PEERIOD HAS ELAPSED AND HEATING THE SAID MOLD AND MIXTURE SO AS TO MAINTAIN SUBSTANTIALLY SAID TEMPERATURE FOR SAID PREDETERMINED TIME PERIOD.
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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) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |