US3156648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter cartridge for a dry cleaning system
Assignee: Motors Liquidation Co
•
Filing: 1962-03-16
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Granted: 1964-11-10
•
Expires: 1982-03-16
Abstract
No abstract record available.
Inventors
- 👤 Byron L Brucken
- 👤 Victor A Williamitis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:52
CPC Classifications
D; D06; D06F; D06F43/00; D06F43/08; D06F43/081; D06F43/085; Y; Y10; Y10S; Y10S210/00; Y10S210/07
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
A COMPOSITE CASTING ADAPTED FOR USE AS A DISPOSABLE FILTER CARTRIDGE IN A SOLVENT DRY CLEANING SYSTEM AND COMPRISING AN INTEGRAL FILTERING MATRIX OF A SETTBLE POROUS INORGANIC MATERIAL FOR REMOVING PARTICULATE MATTER FROM SAID SOLVENT AND MEANS FOR CONTROLLING AND EFFECXTING THE POROSITY OF SAID FILTERING MATRIX, SAID LAST NAMED MEANS INCLUDING A SOLVENT CONDITIONING MEANS COMPRISING A FROTHED MIXTURE OF DETERGENT AND AIR FROTHINGLY DISPERSED THROUGHOUT SAID MATRIX FOR CONTROLLING THE POROSITY OF SAID MATRIX AND DISPENSIBLE FROM SAID COMPOSITE CASTING INTO SAID SOLVENT THROUGHOUT THE LIFE OF SAID FILTER CARTRIDGE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |