Patent US3345440A successfully refreshed from Google Patents.
US3345440A
Expired / Lapsed
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Method for manufacturing foam carbon products
Assignee: Individual
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Filing: 1965-06-29
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Granted: 1967-10-03
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Expires: 1985-06-29
Abstract
No abstract record available.
Inventors
- 👤 John M Googin
- 👤 John M Napier
- 👤 Michael E Scrivner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:05
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/956; C01B32/963; C01B32/984; C01F; C01F7/00; C01F7/02; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/524; C04B38/00; C04B38/0022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD FOR PREPARING A CELLULAR CARBON PRODUCT, COMPRISING THE STEPS OF ADMIXING PARTIALLY POLYMERIZED FURFURYL ALCOHOL WITH URETHANE COMPOUNDS CAPABLE OF INTERACTING TO FORM A CELLULAR URETHANE STRUCTURE, FORMING A CELLULAR STRUCTURE BY THE INTERACTION OF THE URETHANE COMPOUNDS IN THE MIXTURE, HEATING THE RESULTING CELLULAR STRUCTURE TO A TEMPERATURE BELOW THE DECOMPOSITION TEMPERATURE OF THE URETHANE AND SUFFICIENT TO CURE THEFURFURYL ALCOHOL IN THESTRUCTURE, AND THEREAFTER HEATING THE CELLULAR STRUCTURE TO A TEMPERATURE GREATER THAN THE DECOMPOSITION TEMPERATURE OF THE URETHANA AND SUFFICIENT TO CARBONIZE THE FURFURYL ALCOHOL FOR FORMING A CELLULAR CARBON PRODUCT.
Claim 2
Independent Claim
96 words
A METHOD FOR PREPARING A CELLULAR CARBON PRODUCT, COMPRISING THE STEPS OF ADMIXING PARTIALLY POLYMERIZED FURFURYL ALCOHOL WITH URETHANE COMPOUNDS CAPABLE OF INTERACTING TO FORM A CELLULAR URETHANE STRUCTURE, FORMING A CELLULAR STRUCTURE BY THE INTERACTION OF THE URETHANE COMPOUNDS IN THE MIXTURE, HEATING THE RESULTING CELLULAR STRUCTURE TO A TEMPERATURE BELOW THE DECOMPOSITION TEMPERATURE OF THE URETHANE AND SUFFICIENT TO CURE THEFURFURYL ALCOHOL IN THESTRUCTURE, AND THEREAFTER HEATING THE CELLULAR STRUCTURE TO A TEMPERATURE GREATER THAN THE DECOMPOSITION TEMPERATURE OF THE URETHANA AND SUFFICIENT TO CARBONIZE THE FURFURYL ALCOHOL FOR FORMING A CELLULAR CARBON PRODUCT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |