Patent US2740299A successfully refreshed from Google Patents.
Patent US3264720A successfully refreshed from Google Patents.
US3264720A
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Porous metal articles of differential permeability
Assignee: Individual
•
Filing: 1964-09-11
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Granted: 1966-08-09
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Expires: 1984-09-11
Abstract
No abstract record available.
Inventors
- 👤 Lambert H Mott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:04
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/1103; B22F3/1109; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12042; Y10T428/12049; Y10T428/12056; Y10T428/12361; Y10T428/12389; Y10T428/12444; Y10T428/12479; Y10T428/12493; Y10T428/12535; Y10T428/12597
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A POROUS WALL FOR DIFFERENTIAL FLOW THERETHROUGH, SAID WALL COMPRISING A POROUS METAL LAYER HAVING AN UPSTREAM AND A DOWNSTREAM SIDE, AND AN IMPERMEABLE LAYER ASSOCIATED WITH THE UPSTREAM SIDE OF SAID POROUS METAL LAYER, SAID IMPERMEABLE LAYER CONTAINING OPENINGS METERING DIFFERENT AMOUNTS OF FLOW THERETHROUGH IN DIFFERENT PORTIONS OF SAID IMPERMEABLE LAYER, SAID POROUS METAL LAYER BEING THICKER ON THE DOWNSTREAM SIDE OF OPENINGS IN SAID IMPERMEABLE LAYER THAN THE DISTANCE BETWEEN OPENINGS.
Claim 2
Dependent Claim
74 words
A POROUS WALL FOR DIFFERENTIAL FLOW THERETHROUGH, SAID WALL COMPRISING A POROUS METAL LAYER HAVING AN UPSTREAM AND A DOWNSTREAM SIDE, AND AN IMPERMEABLE LAYER ASSOCIATED WITH THE UPSTREAM SIDE OF SAID POROUS METAL LAYER, SAID IMPERMEABLE LAYER CONTAINING OPENINGS METERING DIFFERENT AMOUNTS OF FLOW THERETHROUGH IN DIFFERENT PORTIONS OF SAID IMPERMEABLE LAYER, SAID POROUS METAL LAYER BEING THICKER ON THE DOWNSTREAM SIDE OF OPENINGS IN SAID IMPERMEABLE LAYER THAN THE DISTANCE BETWEEN OPENINGS.
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |