Patent US2802758A successfully refreshed from Google Patents.
US2802758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleaning
Assignee: Detrex Corp
•
Filing: 1955-03-15
•
Granted: 1957-08-13
•
Expires: 1975-03-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Kearney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:24
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/12; B08B3/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A METHOD OF CLEANING A WORK OBJECT WHICH COMPRISES CONTACTING AND TREATING THE WORK OBJECT FOR A DEFINITE TIME INTERVAL WITH A CHLORINATED HYDROCARBON SOLVENT IN A ZONE; REMOVING SAID WORK OBJECT FROM SAID ZONE AND SUBMERGING IT IN A BATH OF LIQUID CHLORINATED HYDROCARBON, CARRYING SAID WORK OBJECT THROUGH A PREDETERMINED PATH THROUGH SAID LIQUID, PIEZOELECTRICALLY GENERATING ULTRASONIC WAVES AT A GENERATING ZONE WITHIN SAID LIQUID OUT OF DIRECT MECHANICAL CONTACT WITH SAID WORK OBJECT, DIRECTING SAID WAVES TOWARD SAID PATH FOR IMPINGING UPON SAID WORK PROJECT WHILE IT IS BEING CARRIED THROUGH SAID PATH, AND SUBJECTING SAID WORK OBJECT TO SAID ULTRASONIC WAVES, SAID WAVES TRAVELING FREELY AND DIRECTLY THROUGH THE LIQUID BETWEEN SAID GENERATING ZONE AND SAID WORK OBJECT.
Claim 2
Independent Claim
122 words
A METHOD OF CLEANING A WORK OBJECT WHICH COMPRISES CONTACTING AND TREATING THE WORK OBJECT FOR A DEFINITE TIME INTERVAL WITH A CHLORINATED HYDROCARBON SOLVENT IN A ZONE; REMOVING SAID WORK OBJECT FROM SAID ZONE AND SUBMERGING IT IN A BATH OF LIQUID CHLORINATED HYDROCARBON, CARRYING SAID WORK OBJECT THROUGH A PREDETERMINED PATH THROUGH SAID LIQUID, PIEZOELECTRICALLY GENERATING ULTRASONIC WAVES AT A GENERATING ZONE WITHIN SAID LIQUID OUT OF DIRECT MECHANICAL CONTACT WITH SAID WORK OBJECT, DIRECTING SAID WAVES TOWARD SAID PATH FOR IMPINGING UPON SAID WORK PROJECT WHILE IT IS BEING CARRIED THROUGH SAID PATH, AND SUBJECTING SAID WORK OBJECT TO SAID ULTRASONIC WAVES, SAID WAVES TRAVELING FREELY AND DIRECTLY THROUGH THE LIQUID BETWEEN SAID GENERATING ZONE AND SAID WORK OBJECT.
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |