US2851338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for testing coatings
Assignee: Individual
•
Filing: 1944-05-01
•
Granted: 1958-09-09
•
Expires: 1964-05-01
Abstract
No abstract record available.
Inventors
- 👤 Iral B Johns
- 👤 Amos S Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:25
CPC Classifications
G; G21; G21C; G21C17/00; G21C17/06; G21C17/07; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/202; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/91; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
A METHOD OF DETECTING DEFECTS IN THE COATING OF A COATED ARTICLE COMPRISING AN EASILY HYDRIDABLE METAL BASE AND A DIFFICULTY HYDRIDABLE JACKET ON THE BASE WHICH COMPRISES EXPOSING SAID COATED ARTICLE TO AN HYDRIDING AGENT AT A TEMPERATURE SUFFICIENTLY HIGH TO FORM THE HYDRIDE OF SAID BASE METAL IN ANY PORES WHICH MAY BE PRESENT IN THE COATING WHEREBY TO EFFECT ENLARGEMENT OF SUCH PORES.
References Cited (Backward Citations)
US1816830A
Cited
US1835024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |