US2558167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rust remover
Assignee: Insl-X Corp
•
Filing: 1947-05-22
•
Granted: 1951-06-26
•
Expires: 1967-05-22
Abstract
No abstract record available.
Inventors
- 👤 Adolfo J Beghin
- 👤 Jr Philip F Hamberg
- 👤 Howard E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:53
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A RUST REMOVING GEL COMPOSITION CONSISTING OF A MIXTURE OF A WATER SOLUBLE, RUST ATTACKING ACID SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID, CITRIC ACID AND TRICHLORACETIC ACID, WATER, 1/3-5%, BASED ON THE WEIGHT OF THE WATER AND ACID, OF SODIUM CARBOXYMETHYL CELLULOSE AS A GEL FORMING AGENG, AND 3-30%, BASED ON THE PECTIN AS A GEL STABILIZER.
Claim 2
Dependent Claim
59 words
A RUST REMOVING GEL COMPOSITION CONSISTING OF A MIXTURE OF A WATER SOLUBLE, RUST ATTACKING ACID SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID, CITRIC ACID AND TRICHLORACETIC ACID, WATER, 1/3-5%, BASED ON THE WEIGHT OF THE WATER AND ACID, OF SODIUM CARBOXYMETHYL CELLULOSE AS A GEL FORMING AGENG, AND 3-30%, BASED ON THE PECTIN AS A GEL STABILIZER.
References Cited (Backward Citations)
US2221968A
Cited
US2340072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |