Patent US3458301A successfully refreshed from Google Patents.
US3458301A
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Method of manufacturing a whitish granular aggregate for building purposes from a crystallisable,vitreous material
Assignee: Individual
•
Filing: 1965-02-24
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Granted: 1969-07-29
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Expires: 1985-02-24
Abstract
No abstract record available.
Inventors
- 👤 Karl Kristian Kobs Kroyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:48
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/14; C03B19/00; C03B19/10; C03B19/1005; C03B19/104; C03B19/108; C03B19/109; C03B19/1095; C03C; C03C10/00; C04; C04B; C04B14/00; C04B14/02; C04B14/04; C04B14/22; C04B18/00; C04B18/02; C04B18/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2695851A
Cited
US2663658A
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US3170812A
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US2758038A
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US3145114A
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US3266879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |