US2827402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of pickling titanium and titanium alloys
Assignee: General Electric Co
•
Filing: 1955-10-24
•
Granted: 1958-03-18
•
Expires: 1975-10-24
Abstract
No abstract record available.
Inventors
- 👤 Albers George Francis
- 👤 Jr William Budd Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:53
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/10; C23G1/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A METHOD OF THE CHARACTER DESCRIBED FOR REMOVING SCALE FROM A TITANIUM OR TITANIUM ALLOY ARTICLE COMPRISING THE STEPS OF IMMERISING THE ARTICLE IN AN AQUEOUS SOLUTION CONSISTING OF SULFURIC ACID AND CALCIUM FLUORIDE UNTIL THE SCALE IS CONVERTED TO A GRAY FILM THEREAFTER IMMERSING THE ARTICLE IN A MINERAL ACID SOLUTION TO REMOVE THE GRAY FILM.
Claim 2
Independent Claim
57 words
A METHOD OF THE CHARACTER DESCRIBED FOR REMOVING SCALE FROM A TITANIUM OR TITANIUM ALLOY ARTICLE COMPRISING THE STEPS OF IMMERISING THE ARTICLE IN AN AQUEOUS SOLUTION CONSISTING OF SULFURIC ACID AND CALCIUM FLUORIDE UNTIL THE SCALE IS CONVERTED TO A GRAY FILM THEREAFTER IMMERSING THE ARTICLE IN A MINERAL ACID SOLUTION TO REMOVE THE GRAY FILM.
References Cited (Backward Citations)
US2724667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |