US2638428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a metal facing on hardenable material
Assignee: Individual
•
Filing: 1949-02-21
•
Granted: 1953-05-12
•
Expires: 1969-02-21
Abstract
No abstract record available.
Inventors
- 👤 Gordon James Edward
- 👤 Evans Cyril George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:41
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/24996; Y10T428/249987; Y10T428/24999
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METHOD OF PRODUCING A METAL FACING ON HARDENABLE MATERIAL COMPRISING DEPOSITING A POROUS METALLIC LAYER ON A HARD, SUBSTANTIALLY CONTINUOUS FORM SURFACE, PLACING HARDENABLE MATERIAL IN CONTACT WITH THE METALLIC LAYER, APPLYING PRESSURE TO THE HARDENABLE MATERIAL DURING HARDENING THEREOF TO THEREBY FORCE PORTIONS OF SAID HARDENABLE MATERIAL INTO PORES OF SAID METALLIC LAYER DURING SAID HARDENING STEP AND SUBSEQUENTLY SEPARATING THE METAL-FACED HARDENED MATERIAL FROM THE FORM SURFACE.
Claim 2
Independent Claim
70 words
A METHOD OF PRODUCING A METAL FACING ON HARDENABLE MATERIAL COMPRISING DEPOSITING A POROUS METALLIC LAYER ON A HARD, SUBSTANTIALLY CONTINUOUS FORM SURFACE, PLACING HARDENABLE MATERIAL IN CONTACT WITH THE METALLIC LAYER, APPLYING PRESSURE TO THE HARDENABLE MATERIAL DURING HARDENING THEREOF TO THEREBY FORCE PORTIONS OF SAID HARDENABLE MATERIAL INTO PORES OF SAID METALLIC LAYER DURING SAID HARDENING STEP AND SUBSEQUENTLY SEPARATING THE METAL-FACED HARDENED MATERIAL FROM THE FORM SURFACE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |