US2918925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical cleaning apparatus
Assignee: Phillips Petroleum Co
•
Filing: 1956-10-24
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Granted: 1959-12-29
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Expires: 1976-10-24
Abstract
No abstract record available.
Inventors
- 👤 John L Dopler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:45
CPC Classifications
F; F28; F28G; F28G1/00; F28G1/16; F28G1/166; F28G9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
APPARATUS COMPRISING IN COMBINATION A VERTICAL CYLINDRICAL CLEANING TANK OPEN AT THE TOP ADAPTED TO CONTAIN LIQUID CLEANING CHEMICAL HAVING MOUNTED THEREON A TURNTABLE SUPERPOSED BY A REMOVABLE HOLDING MEANS WHICH RESTS ON SAID TURNTABLE AND IS ADAPTED TO HOLD THE ARTICLE TO BE CLEANED SUSPENDED IN SAID TANK, DRIVE MEANS FOR ACTUATING THE TURNTABLE, MEANS FOR INTRODUCING A CLEANING CHEMICAL IN CONTACT WITH THE ARTICLE TO BE CLEANED AND MEANS FOR WITHDRAWING SPENT CHEMICAL FROM SAID TANK.
Claim 2
Dependent Claim
78 words
APPARATUS COMPRISING IN COMBINATION A VERTICAL CYLINDRICAL CLEANING TANK OPEN AT THE TOP ADAPTED TO CONTAIN LIQUID CLEANING CHEMICAL HAVING MOUNTED THEREON A TURNTABLE SUPERPOSED BY A REMOVABLE HOLDING MEANS WHICH RESTS ON SAID TURNTABLE AND IS ADAPTED TO HOLD THE ARTICLE TO BE CLEANED SUSPENDED IN SAID TANK, DRIVE MEANS FOR ACTUATING THE TURNTABLE, MEANS FOR INTRODUCING A CLEANING CHEMICAL IN CONTACT WITH THE ARTICLE TO BE CLEANED AND MEANS FOR WITHDRAWING SPENT CHEMICAL FROM SAID TANK.
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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) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |