US3694528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making spherical beads
Assignee: CHARLES W SCHOTT
•
Filing: 1970-05-11
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Granted: 1972-09-26
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Expires: 1990-05-11
Abstract
Abstract A method is provided for pelletizing molten materials which consists in feeding the material to be pelletized downwardly through a vertical refractory tube through a controlled atmosphere and discharging the same horizontally from a rotating circular edge across the surface of a fluid coolant.
Inventors
- 👤 Charles W Schott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:20
CPC Classifications
C; C03; C03B; C03B19/00; C03B19/10; C03B19/108; C03B19/1085; B; B01; B01J; B01J2/00; B01J2/02; B01J2/04; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/10; C03B19/1005; C03B19/1015; C04; C04B; C04B5/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
16 words
The method as claimed in claim 1, wherein the heating is accomplished by an electric arc.
Claim 2
Dependent Claim
14 words
The method as claimed in claim 1 wherein the atmosphere is an oxidizing atmosphere.
Claim 3
Dependent Claim
14 words
The method as claimed in claim 1 wherein the atmosphere is a reducing atmosphere.
Claim 4
Dependent Claim
14 words
The method as claimed in claim 1 wherein the atmosphere is a neutral atmosphere.
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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |