Patent US1715750A successfully refreshed from Google Patents.
US2878146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of de-oxidizing metal surfaces
Assignee: Lanteris Space LLC
•
Filing: 1954-12-16
•
Granted: 1959-03-17
•
Expires: 1974-12-16
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Certa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:21
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE METHOD OF REMOVING OXIDE FROM THE SURFACE OF OXIDIZED IRON AND STEEL ARTICLES AND CONCURRENTLY CONDITIONING SAID SURFACE TO RESIST REOXIDATION, WHICH COMPRISES IMMERSING THE OXIDIZED ARTICLE IN A BATH CONSISTING ESSENTALLY OF A SOLUTION OF AMMONIUM CHLORIDE IN AQUEOUS HYDROCHLORIC ACID AT A TEMPERATURE BETWEEN ABOUT 40* C. AND THE BOILING POINT OF SAID BATH, SAID AQUEOUS HYDROCHLORIC ACID CONTAINING BETWEEN ABOUT 16 AND ABOUT 37%, BY WEIGHT, OF HCL AND SAID AMMONIUM CHLORIDE BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 10 GRAMS PER 100 ML. OF AQUEOUS HYDROCHLORIC ACID AND A MASS SUFFICIENT TO SATURATE SAID AQUEOUS HYDROCHLORIC ACID AT SAID TEMPERATURE, AND CONTINUING SAID IMMERSION AT LEAST UNTIL OXIDE IS REMOVED.
Claim 2
Independent Claim
115 words
THE METHOD OF REMOVING OXIDE FROM THE SURFACE OF OXIDIZED IRON AND STEEL ARTICLES AND CONCURRENTLY CONDITIONING SAID SURFACE TO RESIST REOXIDATION, WHICH COMPRISES IMMERSING THE OXIDIZED ARTICLE IN A BATH CONSISTING ESSENTALLY OF A SOLUTION OF AMMONIUM CHLORIDE IN AQUEOUS HYDROCHLORIC ACID AT A TEMPERATURE BETWEEN ABOUT 40* C. AND THE BOILING POINT OF SAID BATH, SAID AQUEOUS HYDROCHLORIC ACID CONTAINING BETWEEN ABOUT 16 AND ABOUT 37%, BY WEIGHT, OF HCL AND SAID AMMONIUM CHLORIDE BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 10 GRAMS PER 100 ML. OF AQUEOUS HYDROCHLORIC ACID AND A MASS SUFFICIENT TO SATURATE SAID AQUEOUS HYDROCHLORIC ACID AT SAID TEMPERATURE, AND CONTINUING SAID IMMERSION AT LEAST UNTIL OXIDE IS REMOVED.
References Cited (Backward Citations)
US90438A
Cited
US290754A
Cited
GB163534A
Cited
CH92367A
Cited
GB330581A
Cited
US2367811A
Cited
US2524757A
Cited
US2666000A
Cited
US2692188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |