Patent US3297439A successfully refreshed from Google Patents.
US3297439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simultaneous sinter bond and nitride for powdered material and backing assembly
Assignee: PepsiAmericas Inc
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Filing: 1963-11-18
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Granted: 1967-01-10
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Expires: 1983-11-18
Abstract
No abstract record available.
Inventors
- 👤 Fred E Kendall
- 👤 Nitz Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:08
CPC Classifications
C; C23; C23C; C23C8/00; B; B22; B22F; B22F7/00; B22F7/02; B22F7/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
METHOD OF BONDING A COMPACT OF POWDERED PREDOMINANTLY METALLIC MATERIAL TO A METAL SUPPORT MEMBER, WHICH METHOD COMPRISES THE STEPS OF CLEANING THE SUPPORT MEMBER, PLACING THE SUPPORT MEMBER WITH SAID COMPACT ADJACENT THERETO BOTH IN A CASE HARDENING ATMOSPHERE, AND SUBJECTING THE ASSEMBLY OF COMPACT AND SUPPORT MEMBER TO HEAT AND PRESSURE WHILE IN SAID CASE HARDENING ATMOSPHERE WHEREBY THE CASE HARDENING OF SUPPORT MEMBER ULTIMATELY VARIES DIFFERENTIALLY FROM MAXIMUM AT UNCOVERED SURFACES THEREOF TO MINIMUM AT A POSITION INTERMEDIATE LIMITS OF THE INTERFACE BETWEEN SUPPORT MEMBER AND COMPACT.
References Cited (Backward Citations)
US2279003A
Cited
US2408430A
Cited
US2737456A
Cited
US2741828A
Cited
US2746134A
Cited
US2757108A
Cited
US2872311A
Cited
US2933386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |