US3069017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth type fibrous filter elements
Assignee: Motors Liquidation Co
•
Filing: 1959-03-02
•
Granted: 1962-12-18
•
Expires: 1979-03-02
Abstract
No abstract record available.
Inventors
- 👤 Gerald W Colby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:17
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A FILTER ELEMENT COMPRISING A POROUS CONTAINER, A MASS OF LEAF FIBERS SUCH AS SISAL, JUTE AND HEMP AND DISCRETE PIECES OF ORGANIC FELTED FIBERS PACKED IN SAID CONTAINER WITH SAID LEAF FIBERS MAINTAINING INTERSTICES BETWEEN SAID PIECES WHEREBY PENETRATION TO EACH PIECE OF SAID MASS BY FLUID TO BE FILTERED IS PROMOTED, THE WEIGHT OF SAID MASS OF FIBERS AND PIECES BEING FROM 9.0 TO 14.0 POUNDS PER CUBIC FOOT, SAID PIECES INCLUDING ABOUT 40 TO 45 PERCENT
Claim 2
Dependent Claim
79 words
A FILTER ELEMENT COMPRISING A POROUS CONTAINER, A MASS OF LEAF FIBERS SUCH AS SISAL, JUTE AND HEMP AND DISCRETE PIECES OF ORGANIC FELTED FIBERS PACKED IN SAID CONTAINER WITH SAID LEAF FIBERS MAINTAINING INTERSTICES BETWEEN SAID PIECES WHEREBY PENETRATION TO EACH PIECE OF SAID MASS BY FLUID TO BE FILTERED IS PROMOTED, THE WEIGHT OF SAID MASS OF FIBERS AND PIECES BEING FROM 9.0 TO 14.0 POUNDS PER CUBIC FOOT, SAID PIECES INCLUDING ABOUT 40 TO 45 PERCENT
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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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |