Patent US3231409A successfully refreshed from Google Patents.
US3231409A
Expired / Lapsed
US
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Method of heat treating an inorganic fibrous body for moisture transfer and/or heat
Assignee: Individual
•
Filing: 1962-01-08
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Granted: 1966-01-25
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Expires: 1982-01-08
Abstract
No abstract record available.
Inventors
- 👤 Munters Carl Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:37
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B30/00; C04B30/02; C04B41/45; C04B41/50; C04B41/5076; C04B41/5089; F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411; F24F2003/1458; F24F2003/1464
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE METHOD OF PORDUCING A BODY FOR MOISTURE TRANSFER, SAID BODY BEING COMPOSED OF SHEETS OF ASBESTOS FIBERS AND WHICH SHEETS ARE MUTUALLY JOINED TO ONE ANOTHER AT SPACED POINTS AND THUS FORM A PLURALITY FO SUBSTANTIALLY PARALLEL CHANNELS BETWEEN THEM, AND WHICH SHEETS CONTAIN A SMALL AMOUNT OF ORGANIC PARTICLES TO STRENGTHEN THE SHEETS, THE SAID METHOD CONSISTING IN THE SUBJECTION OF THE BODY BEFORE USE TO HEAT TREATMENT BY MEANS OF WHICH THE ORGANIC PARTICLES IN THE SHEETS ARE OXIDIZED AND AT LEAST PARTLY REMOVED IN GASEOUS FORM, LEAVING WATER OF CRYSTALLIZATION REMAINING IN THE ASBESTOS FIBERS.
Claim 2
Independent Claim
99 words
THE METHOD OF PORDUCING A BODY FOR MOISTURE TRANSFER, SAID BODY BEING COMPOSED OF SHEETS OF ASBESTOS FIBERS AND WHICH SHEETS ARE MUTUALLY JOINED TO ONE ANOTHER AT SPACED POINTS AND THUS FORM A PLURALITY FO SUBSTANTIALLY PARALLEL CHANNELS BETWEEN THEM, AND WHICH SHEETS CONTAIN A SMALL AMOUNT OF ORGANIC PARTICLES TO STRENGTHEN THE SHEETS, THE SAID METHOD CONSISTING IN THE SUBJECTION OF THE BODY BEFORE USE TO HEAT TREATMENT BY MEANS OF WHICH THE ORGANIC PARTICLES IN THE SHEETS ARE OXIDIZED AND AT LEAST PARTLY REMOVED IN GASEOUS FORM, LEAVING WATER OF CRYSTALLIZATION REMAINING IN THE ASBESTOS FIBERS.
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |