US3129188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystalline spherules
Assignee: 3M Co
•
Filing: 1961-03-16
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Granted: 1964-04-14
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Expires: 1981-03-16
Abstract
No abstract record available.
Inventors
- 👤 Harold G Sowman
- 👤 James R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:34
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/628; C04B35/62884; B; B01; B01J; B01J2/00; B01J2/02; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/928; C04B35/51; C04B35/62802; C04B35/62828; C04B35/62839; G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/60; C01P2004/61; C01P2004/80; C01P2006/00; C01P2006/80; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/38; C04B2235/3817; C04B2235/50; C04B2235/52; C04B2235/528; C04B2235/54; C04B2235/5418; C04B2235/5427; C04B2235/65; C04B2235/658; C04B2235/6582; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/90; Y10S376/901; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
AS ARTICLES OF MANUFACTURE, SPHERULES HAVING A DIAMETER IN THE RANGE OF ABOUT 10 MICRONS TO ABOUT 125 MILS OF CRYSTALLINE MATERIAL OF THE CLASS CONSISTING OF URANIUM CARBIDE, URANIUM (THORIUM) CARBIDE AND THORIUM CARBIDE HAVING A SMOOTH, SUBSTANTIALY SPHERICAL OUTER SURFACE FORMED FROM THE MOLTEN STATE BY SURFACE TENSION FORCES, AND CHARACTERIZED BY SUBSTANTIALLY VOID-FREE CRYSTALLINE INTERNAL STRUCTURE.
Claim 2
Dependent Claim
59 words
AS ARTICLES OF MANUFACTURE, SPHERULES HAVING A DIAMETER IN THE RANGE OF ABOUT 10 MICRONS TO ABOUT 125 MILS OF CRYSTALLINE MATERIAL OF THE CLASS CONSISTING OF URANIUM CARBIDE, URANIUM (THORIUM) CARBIDE AND THORIUM CARBIDE HAVING A SMOOTH, SUBSTANTIALY SPHERICAL OUTER SURFACE FORMED FROM THE MOLTEN STATE BY SURFACE TENSION FORCES, AND CHARACTERIZED BY SUBSTANTIALLY VOID-FREE CRYSTALLINE INTERNAL STRUCTURE.
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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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |