Patent US4192729A successfully refreshed from Google Patents.
Patent US3078512A successfully refreshed from Google Patents.
US3078512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruder vent cleaner
Assignee: Phillips Petroleum Co
•
Filing: 1960-09-30
•
Granted: 1963-02-26
•
Expires: 1980-09-30
Abstract
No abstract record available.
Inventors
- 👤 Haven Clark G De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:44
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/50; B29C48/76; B29C48/505; B29C48/55; B29C48/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
APPARATUS FOR TREATING MATERIAL COMPRISING, IN COMBINATION, A FORWARD FEEDING MEANS OPERATING WITHIN A CASING SURROUNDING SAID FEED MEANS, AN OPENING IN SAID CASING, A DEVOLATILIZATION CHAMBER IN COMMUNICATION WITH SAID OPENING AND AN AREA EXTERNAL OF THE APPARATUS COMBINATION SO AS TO PERMIT THE ESCAPE OF VOLATILES FROM SAID APPARATUS COMBINATION AND A PERIODICALLY OPERATED RECIPROCATING MEMBER CLOSELY FITTING THE INTERIOR SURFACE OF SAID CHAMBER AND ADAPTED TO PERMIT THE DISCHARGE OF VOLATILES WHEN SAID MEMBER IS IN THE UPPER PORTION OF ITS STROKE AND TO ALTERNATELY REMOVE DEPOSITED SOLIDS FROM THE INTERIOR SURFACES OF SAID CHAMBER DURING ITS DOWNWARD STROKE.
Claim 2
Dependent Claim
102 words
APPARATUS FOR TREATING MATERIAL COMPRISING, IN COMBINATION, A FORWARD FEEDING MEANS OPERATING WITHIN A CASING SURROUNDING SAID FEED MEANS, AN OPENING IN SAID CASING, A DEVOLATILIZATION CHAMBER IN COMMUNICATION WITH SAID OPENING AND AN AREA EXTERNAL OF THE APPARATUS COMBINATION SO AS TO PERMIT THE ESCAPE OF VOLATILES FROM SAID APPARATUS COMBINATION AND A PERIODICALLY OPERATED RECIPROCATING MEMBER CLOSELY FITTING THE INTERIOR SURFACE OF SAID CHAMBER AND ADAPTED TO PERMIT THE DISCHARGE OF VOLATILES WHEN SAID MEMBER IS IN THE UPPER PORTION OF ITS STROKE AND TO ALTERNATELY REMOVE DEPOSITED SOLIDS FROM THE INTERIOR SURFACES OF SAID CHAMBER DURING ITS DOWNWARD STROKE.
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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |