Patent US3020121A successfully refreshed from Google Patents.
US3020121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for conditioning hollow articles against corrosion
Assignee: Individual
•
Filing: 1959-11-19
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Granted: 1962-02-06
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Expires: 1979-11-19
Abstract
No abstract record available.
Inventors
- 👤 Glen C Bull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:48
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A METHOD OF CONDITIONING HOLLOW AND PARTIALLY HOLLOW ARTICLES AGAINST CORROSION INCLUDING INFLATING A FLEXIBLE CONTAINER WITHIN THE HOLLOW OF THE ARTICLE TO SUBSTANTIALLY FILL THE HOLLOW AND EXPEL THE FREE ATMOSPHERE THEREFROM, SEALING ALL THE EXTERIOR OPENINGS IN THE ARTICLE COMMUNICATING WITH THE HOLLOW THEREIN, SURROUNDING THE ARTICLE WITH A SECOND FLEXIBLE CONTAINER, APPLYING A CORROSION INHIBITING AGENT ON THE EXTERIOR OF THE INNERMOST CONTAINER, AND SUPPLYING A CONTINUOUS CIRCULATION OF AN INERT MEDIUM
Claim 2
Independent Claim
75 words
A METHOD OF CONDITIONING HOLLOW AND PARTIALLY HOLLOW ARTICLES AGAINST CORROSION INCLUDING INFLATING A FLEXIBLE CONTAINER WITHIN THE HOLLOW OF THE ARTICLE TO SUBSTANTIALLY FILL THE HOLLOW AND EXPEL THE FREE ATMOSPHERE THEREFROM, SEALING ALL THE EXTERIOR OPENINGS IN THE ARTICLE COMMUNICATING WITH THE HOLLOW THEREIN, SURROUNDING THE ARTICLE WITH A SECOND FLEXIBLE CONTAINER, APPLYING A CORROSION INHIBITING AGENT ON THE EXTERIOR OF THE INNERMOST CONTAINER, AND SUPPLYING A CONTINUOUS CIRCULATION OF AN INERT MEDIUM
References Cited (Backward Citations)
US2638263A
Cited
US2914377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |