US3098775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying a chromate conversion coating to the surface of aluminum
Assignee: Henkel Corp
•
Filing: 1961-08-09
•
Granted: 1963-07-23
•
Expires: 1981-08-09
Abstract
No abstract record available.
Inventors
- 👤 James H Thirsk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:19
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/73
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
IN THE ART OF FORMING A CHROMATE CONVERSION COATING ON AN ALUMINUM SURFACE BY TREATING THE SURFACE WITH A CHROMATE CONVERSION COATING SOLUTION, THE METHOD WHICH COMPRISES MOVING THE SURFACE IN ONE DIRECTION PAST AND IN CONTACT WITH A ROLLER THE SURFACE OF WHICH IS BEING DRIVEN IN THE OPPOSITE DIRECTION AND SIMULTANEOUSLY APPLYING COATING SOLUTION TO THE REGION OF CONTACT BETWEEN THE METAL AND THE ROLLER, THE SURFACE SPEED OF THE ROLLER BEING FROM 33 1/3% OF THE SPEED OF THE MOVING ALUMINUM SURFACE.
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |