US3349037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additive for stainless steel pickling baths
Assignee: Individual
•
Filing: 1966-12-14
•
Granted: 1967-10-24
•
Expires: 1986-12-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:06
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
AN ADDITIVE FOR ACID PICKLING BATHS CONSISTING ESSENTIALLY OF 0.5 TO 1 PART BY WEIGHT OF LIGNIN SULFONATE, 20 TO 30 PARTS BY WEIGHT OF SODIUM 2-ETYLHEXYL SULFATE, AND 25-30 PARTS BY WEIGHT OF PROPYLENE GLYCOL, THE BALANCE BEING WATER.
Claim 2
Dependent Claim
40 words
AN ADDITIVE FOR ACID PICKLING BATHS CONSISTING ESSENTIALLY OF 0.5 TO 1 PART BY WEIGHT OF LIGNIN SULFONATE, 20 TO 30 PARTS BY WEIGHT OF SODIUM 2-ETYLHEXYL SULFATE, AND 25-30 PARTS BY WEIGHT OF PROPYLENE GLYCOL, THE BALANCE BEING WATER.
References Cited (Backward Citations)
US3119726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |