Patent US3453104A successfully refreshed from Google Patents.
US3453104A
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US
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Process for making porous materials
Assignee: Lockheed Martin Corp
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Filing: 1967-11-28
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Granted: 1969-07-01
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Expires: 1987-11-28
Abstract
No abstract record available.
Inventors
- 👤 Vincent S De Marchi
- 👤 Alfred S Neiman
- 👤 Henry F Wigton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:58
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/20; B01D39/2068; B01D39/10; B01D39/2027; B01D39/2031; B01D39/2034; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/1121; B22F3/1134; C; C22; C22C; C22C1/00; C22C1/10; C22C1/1026; B01D2239/00; B01D2239/04; B01D2239/0471; B01D2239/0485; B01D2239/12; B01D2239/1216; B22F2998/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12153
Claims Analysis
Total Claims: 0
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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) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |