Patent US3111963A successfully refreshed from Google Patents.
US3111963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel flow device
Assignee: Individual
•
Filing: 1961-04-24
•
Granted: 1963-11-26
•
Expires: 1981-04-24
Abstract
No abstract record available.
Inventors
- 👤 Richard E Brockwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:36
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/1045; F16C33/1055; B; B01; B01D; B01D29/00; B01D29/44; B01D29/46; F16C33/14; F16C17/00; F16C17/02; F16C2220/00; F16C2220/02; F16C33/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49604
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A POROUS-WALLED, HOLLOW ARTICLE COMPRISING A MULTIPLICITY OF CENTRALLY-APERTURED, COAXIALLY STACKED PLATES FORMED FROM A NON-POROUS MATERIAL, BOTH SURFACES OF A PORTION OF THE PLATES IN SAID ARTICLE BEING PROVIDED WITH GROOVES EXTENDING OUTWARDLY FROM THEIR CENTRAL APERTURE TO THEIR PERIPHERY AND A PORTION OF SAID PLATES BEING UNGROOVED, SAID GROOVED AND UNGROOVED PLATES BEING STACKED ALTERNATELY.
Claim 2
Dependent Claim
57 words
A POROUS-WALLED, HOLLOW ARTICLE COMPRISING A MULTIPLICITY OF CENTRALLY-APERTURED, COAXIALLY STACKED PLATES FORMED FROM A NON-POROUS MATERIAL, BOTH SURFACES OF A PORTION OF THE PLATES IN SAID ARTICLE BEING PROVIDED WITH GROOVES EXTENDING OUTWARDLY FROM THEIR CENTRAL APERTURE TO THEIR PERIPHERY AND A PORTION OF SAID PLATES BEING UNGROOVED, SAID GROOVED AND UNGROOVED PLATES BEING STACKED ALTERNATELY.
References Cited (Backward Citations)
US1700565A
Cited
US2185999A
Cited
US2346647A
Cited
US2450339A
Cited
FR987457A
Cited
US2454982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |