US2493951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of hardening alloys by indiffusion of a metalloid
Assignee: Hartford National Bank and Trust Co
•
Filing: 1946-05-03
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Granted: 1950-01-10
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Expires: 1966-05-03
Abstract
No abstract record available.
Inventors
- 👤 Druyvesteyn Mari Johan
- 👤 Meyering Jan Laurens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:22
CPC Classifications
C; C21; C21D; C21D9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE METHOD OF MANUFACTURING A HARDENED BODY, COMPRISING THE STEPS OF HEATING A MONOCRYSTALLINE ALLOY BODY TO AN ELEVATED TEMPERATURE, DIFFUSING A METALLOID SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND NITROGEN INTO SAID ALLOY BODY WHILE THE SAID ALLOY BODY IS MAINTAINED AT THE SAID ELEVATED TEMPERATURE, AND THEREAFTER DEFORMING THE SAID ALLOY BODY.
Claim 2
Independent Claim
55 words
THE METHOD OF MANUFACTURING A HARDENED BODY, COMPRISING THE STEPS OF HEATING A MONOCRYSTALLINE ALLOY BODY TO AN ELEVATED TEMPERATURE, DIFFUSING A METALLOID SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND NITROGEN INTO SAID ALLOY BODY WHILE THE SAID ALLOY BODY IS MAINTAINED AT THE SAID ELEVATED TEMPERATURE, AND THEREAFTER DEFORMING THE SAID ALLOY BODY.
References Cited (Backward Citations)
BE454567A
Cited
US1487554A
Cited
US1601931A
Cited
US2012825A
Cited
US2145690A
Cited
US2300274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |