Patent US3060304A successfully refreshed from Google Patents.
US3060304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric direct heating method of heating metallic pieces
Assignee: TO A KAKO KK
•
Filing: 1959-10-19
•
Granted: 1962-10-23
•
Expires: 1979-10-19
Abstract
No abstract record available.
Inventors
- 👤 Tanaka Yukio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:50
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/60; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/42; C; C21; C21D; C21D1/00; C21D1/34; C21D1/40; C21D1/53; C21D9/00; C21D9/52; C21D9/54; C21D9/56; C21D9/62; C22; C22B; C22B1/00; C22B1/02; C22B1/10; C22F; C22F1/00; C22F1/004; F; F28; F28D; F28D13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
AN ELECTRIC DIRECT METHOD OF HEATING ELECTRICALLY CONDUCTIVE METALLIC PIECES, CHARACTERIZED IN DIPPING METALLIC PIECES TO BE HEATED IN A BED OF FLUIDIZED ELECTROCONDUCTIVE CARBON POWDER ROTATING THE PIECES AROUND AN AXIS, FLOWING AN ELECTRIC CURRENT THROUGH THE BED OF FLUIDIZED CARBON POWDER TO THE PIECE, AND ADJUSTING THE HEATING TEMPERATURE OF THE PIECE BEING HEATED BY CONTROLLING THE CURRENT DENSITY AT THE SURFACE OF SAID METALLIC PIECE.
Claim 2
Dependent Claim
68 words
AN ELECTRIC DIRECT METHOD OF HEATING ELECTRICALLY CONDUCTIVE METALLIC PIECES, CHARACTERIZED IN DIPPING METALLIC PIECES TO BE HEATED IN A BED OF FLUIDIZED ELECTROCONDUCTIVE CARBON POWDER ROTATING THE PIECES AROUND AN AXIS, FLOWING AN ELECTRIC CURRENT THROUGH THE BED OF FLUIDIZED CARBON POWDER TO THE PIECE, AND ADJUSTING THE HEATING TEMPERATURE OF THE PIECE BEING HEATED BY CONTROLLING THE CURRENT DENSITY AT THE SURFACE OF SAID METALLIC PIECE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |