US3028267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for cleaning rigid objects
Assignee: Wacker Chemie AG
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Filing: 1959-05-26
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Granted: 1962-04-03
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Expires: 1979-05-26
Abstract
No abstract record available.
Inventors
- 👤 Edhofer Georg
- 👤 Hollerer Hans
- 👤 Lebsanft Kurt
- 👤 Schmidt Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:28
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/12; C; C23; C23G; C23G5/00; C23G5/02; C23G5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
PROCESS FOR CLEANING OBJECTS IN A PLURALITY OF SUCCESSIVE BATCHES OF VOLATILE LIQUID SOLVENT, WHICH COMPRISES CONTINUOUSLY CREATING A VAPOR OF SAID SOLVENT IN THE ZONE ABOVE SAID SUCCESSIVE BATCHES OF LIQUID SOLVENT AND CONTINUOUSLY CONDENSING SAID VAPOR TO PRECIPITATE THE CONDENSATE INTO SAID LIQUID SOLVENT TO REPLENISH THE LATTER, INITIALLY PLACING THE OBJECT TO BE CLEANED IN SAID VAPOR ZONE ABOVE ONE OF SAID BATCHES OF LIQUID SOLVENT, INTERCEPTING CONDENSED SOLVENT PRECIPITATING FROM SAID OBJECT AND DISCHARGING SAME AT A POINT REMOTE FROM SAID BATCHES OF LIQUID SOLVENT, AND THEN, WHILE SAID OBJECT IS STILL MOIST WITH SOLVENT, IMMERSING SAID OBJECT IN AND REMOVING IT FROM SAID SUCCESSIVE BATCHES OF LIQUID SOLVENT.
Claim 2
Dependent Claim
113 words
PROCESS FOR CLEANING OBJECTS IN A PLURALITY OF SUCCESSIVE BATCHES OF VOLATILE LIQUID SOLVENT, WHICH COMPRISES CONTINUOUSLY CREATING A VAPOR OF SAID SOLVENT IN THE ZONE ABOVE SAID SUCCESSIVE BATCHES OF LIQUID SOLVENT AND CONTINUOUSLY CONDENSING SAID VAPOR TO PRECIPITATE THE CONDENSATE INTO SAID LIQUID SOLVENT TO REPLENISH THE LATTER, INITIALLY PLACING THE OBJECT TO BE CLEANED IN SAID VAPOR ZONE ABOVE ONE OF SAID BATCHES OF LIQUID SOLVENT, INTERCEPTING CONDENSED SOLVENT PRECIPITATING FROM SAID OBJECT AND DISCHARGING SAME AT A POINT REMOTE FROM SAID BATCHES OF LIQUID SOLVENT, AND THEN, WHILE SAID OBJECT IS STILL MOIST WITH SOLVENT, IMMERSING SAID OBJECT IN AND REMOVING IT FROM SAID SUCCESSIVE BATCHES OF LIQUID SOLVENT.
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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |