US3238065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for maintaining a constant boiling liquid level in vapor solvent degreasing operation
Assignee: EIDP Inc
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Filing: 1962-05-14
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Granted: 1966-03-01
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Expires: 1982-05-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Lawrence Fullhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:07
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/02; C23G; C23G5/00; C23G5/02; C23G5/04; D; D06; D06F; D06F43/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7498
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
IN A PROCESS FOR TREATING ARTICLES WITH A BOILING LIQUID COMPRISING A CHLORINATED SOLVENT WHOSE VAPOR AT THE BOILING POINT HAS A DENSITY OF AT LEAST THREE TIMES THAT OF AIR AT THE SAME TEMPERATURE, THE IMPROVEMENT FOR MAINTAINING SAID BOILING PATH AT A SUBSTANTIALLY CONSTANT LEVEL BELOW AN ATMOSPHERE OF BATH VAPOR BY CONTINUOUS ADDITION OF A SOLVENT MEAINTENANCE COMPOSITION, COMPRISING THE STEPS OF: (A) MAINTAINING SAID CHLORINATED SOLVENT BATH COMPOSITION AT THE BOILING POINT IN A TREATING VESSEL WHILE MAINTAINING THE BATH VAPOR AT A CONTROLLED LEVEL WELL ABOVE THE BOILING BATH, (B) PROVIDING LIQUID CHLORINATED SOLVENT MAINTENANCE
References Cited (Backward Citations)
US1083723A
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US1961867A
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FR662742A
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US2113129A
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CH193935A
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GB496357A
Cited
US2220125A
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FR878808A
Cited
US2302476A
Cited
US2564230A
Cited
US2738802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |