US4758621A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Persulfate activated autodeposition bath
Assignee: Henkel Corp
•
Filing: 1983-10-21
•
Granted: 1988-07-19
•
Expires: 2003-10-21
Abstract
Abstract An aqueous autodepositing coating composition for coating metallic surfaces comprising resin, persulfate and, optionally, fluoride, which is effective in coating at a pH of about 4 to about 8.5.
Inventors
- 👤 Ronald W. Broadbent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:23
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/142; C; C09; C09D; C09D5/00; C09D5/08; C09D5/088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
An aqueous basic coating composition which is effective in forming an autodeposited coating on a metallic surface and consisting essentially of: (A) dispersed resin solids, (B) persulfate, and (C) fluoride; and having a pH in excess of 7 and not in excess of about 8.5.
Claim 2
Dependent Claim
45 words
An aqueous basic coating composition which is effective in forming an autodeposited coating on a metallic surface and consisting essentially of: (A) dispersed resin solids, (B) persulfate, and (C) fluoride; and having a pH in excess of 7 and not in excess of about 8.5.
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) | 1991-07-19 | 1992-01-18 | 1992-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-19 | 1996-01-18 | 1996-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-19 | 2000-01-18 | 2000-07-19 | $7700.00 | Window Closed / Lapsed |