US3272729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electropolishing small metal objects
Assignee: Individual
•
Filing: 1963-04-10
•
Granted: 1966-09-13
•
Expires: 1983-04-10
Abstract
No abstract record available.
Inventors
- 👤 John F Jumer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:39
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE METHOD OF ENHANCING THE UNIFORMITY OF LUSTRE OF SMALL METAL OBJECTS CAPABLE OF BEING ELECTROPOLISHED IN AN ELECTROLYTIC BATH WHICH INCLUDES THE STEPS OF ARRANGING A PLURALITY OF SAID OBJECTS IN CONTACT WITH EACH OTHER IN A RELATIVELY THIN GENERALLY RECTANGULAR ZONE IN AN ELECTROPOLISHING ELECTROLYTIC BATH, MAINTAINING SAID OBJECTS MOTIONLESS WHILE PASSING ELECTRICAL CURRENT FROM SAID PARTS TO A CATHODE SPACED FROM SAID ZONE, THEREBY FORMING A GAS FILM ON THE SURFACES OF THE PARTS EXPOSED DIRECTLY TO SAID CATHODE, MAINTAINING SAID OBJECTS MOTIONLES UNTIL SAID GAS FILM CONSISTS OF A MULTIPLICITY OF BUBBLES OF IR-
Claim 2
Independent Claim
98 words
THE METHOD OF ENHANCING THE UNIFORMITY OF LUSTRE OF SMALL METAL OBJECTS CAPABLE OF BEING ELECTROPOLISHED IN AN ELECTROLYTIC BATH WHICH INCLUDES THE STEPS OF ARRANGING A PLURALITY OF SAID OBJECTS IN CONTACT WITH EACH OTHER IN A RELATIVELY THIN GENERALLY RECTANGULAR ZONE IN AN ELECTROPOLISHING ELECTROLYTIC BATH, MAINTAINING SAID OBJECTS MOTIONLESS WHILE PASSING ELECTRICAL CURRENT FROM SAID PARTS TO A CATHODE SPACED FROM SAID ZONE, THEREBY FORMING A GAS FILM ON THE SURFACES OF THE PARTS EXPOSED DIRECTLY TO SAID CATHODE, MAINTAINING SAID OBJECTS MOTIONLES UNTIL SAID GAS FILM CONSISTS OF A MULTIPLICITY OF BUBBLES OF IR-
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |