US3116355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making a microporous matrix
Assignee: Leesona Corp
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Filing: 1961-07-26
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Granted: 1963-12-31
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Expires: 1981-07-26
Abstract
No abstract record available.
Inventors
- 👤 Harry G Oswin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:49
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/44; B29C33/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE PROCESS OF MAKING A MICROPOROUS MATRIX FOR A FUEL CELL ELECTRODE COMPRISING THE STEPS OF (1E ARRANGING FILAMENTS HAVING A DIAMETER OF FROM ABOUT 1 TO ABOUT 100 MICRONS IN PARALLEL LINES, (2) APPLYING A MOLTEN POLYMER TO SAID FILAMENTS, THEREBY EMBEDDING THE FILAMENTS IN THE POLYMER, (3) COOLING AND HOT PRESSING SAID POLYMER TO REMOVE VOIDS IN THE STRUCTURE AND (4) REMOVING THE FILAMENTS FROM THE POLYMER, WHEREBY SAID MATRIX POSSESSES A UNIFORM PORE SIZE OF FROM 1-100 MICTRONS AND A POROSITY OF FROM ABOUT 25-85%.
Claim 2
Dependent Claim
88 words
THE PROCESS OF MAKING A MICROPOROUS MATRIX FOR A FUEL CELL ELECTRODE COMPRISING THE STEPS OF (1E ARRANGING FILAMENTS HAVING A DIAMETER OF FROM ABOUT 1 TO ABOUT 100 MICRONS IN PARALLEL LINES, (2) APPLYING A MOLTEN POLYMER TO SAID FILAMENTS, THEREBY EMBEDDING THE FILAMENTS IN THE POLYMER, (3) COOLING AND HOT PRESSING SAID POLYMER TO REMOVE VOIDS IN THE STRUCTURE AND (4) REMOVING THE FILAMENTS FROM THE POLYMER, WHEREBY SAID MATRIX POSSESSES A UNIFORM PORE SIZE OF FROM 1-100 MICTRONS AND A POROSITY OF FROM ABOUT 25-85%.
References Cited (Backward Citations)
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Cited
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Cited
GB766139A
Cited
DE1084686B
Cited
US2880056A
Cited
US2984869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |