US2667456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical process for retaining cutting edges
Assignee: Individual
•
Filing: 1950-06-24
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Granted: 1954-01-26
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Expires: 1970-06-24
Abstract
No abstract record available.
Inventors
- 👤 Young Clarence Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:25
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/54; C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
PROCESS FOR RETAINING THE CUTTING EDGE OF A STEEL BLADE IN CONTACT WITH BRASS METAL CONSISTING OF TREATING SAID STEEL BLADE FOR A PLURALITY OF HOURS IN CONTACT WITH AN AQUEOUS SOLUTION COSISTING OF A SOLUBLE DICHROMATE.
Claim 2
Dependent Claim
37 words
PROCESS FOR RETAINING THE CUTTING EDGE OF A STEEL BLADE IN CONTACT WITH BRASS METAL CONSISTING OF TREATING SAID STEEL BLADE FOR A PLURALITY OF HOURS IN CONTACT WITH AN AQUEOUS SOLUTION COSISTING OF A SOLUBLE DICHROMATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |