Patent US2941949A successfully refreshed from Google Patents.
US2941949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid baths for cleaning and pickling metal
Assignee: Henkel Corp
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Filing: 1957-05-14
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Granted: 1960-06-21
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Expires: 1977-05-14
Abstract
No abstract record available.
Inventors
- 👤 Albert J Saukaltis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:26
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06; C23G1/065; B; B01; B01F; B01F35/00; B01F35/80; B01F35/83; E; E01; E01C; E01C19/00; E01C19/02; E01C19/10; E01C19/1059; E01C19/1068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A MINERAL ACID BATH OF CLEANING AND PICKING METAL SURFACES, SAID BATH CONTAINING, AS AN INHIBITING ADDITION AGENT, AN AMOUNT OF TRIPHENYL SULFONIUM CHLORIDE WHICH IS SUFFICIENT TO REDUCE THE RATE OF ACID ATTACK ON METAL.
Claim 2
Dependent Claim
36 words
A MINERAL ACID BATH OF CLEANING AND PICKING METAL SURFACES, SAID BATH CONTAINING, AS AN INHIBITING ADDITION AGENT, AN AMOUNT OF TRIPHENYL SULFONIUM CHLORIDE WHICH IS SUFFICIENT TO REDUCE THE RATE OF ACID ATTACK ON METAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |