Patent US2902379A successfully refreshed from Google Patents.
US2902379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous agglomerate
Assignee: International Minerals and Chemical Corp
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Filing: 1957-06-26
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Granted: 1959-09-01
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Expires: 1977-06-26
Abstract
No abstract record available.
Inventors
- 👤 Louis S Mccollum
- 👤 Gindoff Sol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:21
CPC Classifications
C; C04; C04B; C04B18/00; C04B18/02; C04B20/00; C04B20/02; C04B20/04; C04B20/06; C04B20/068; C04B20/10; C04B20/1055; C04B28/00; C04B28/02; Y; Y10; Y10S; Y10S106/00; Y10S106/01; Y10S106/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
AN AGGLOMARATE COMPRISED OF FIRMLY ADHERING PARTICLES OF EXPANDED PERLITE AND ASBETOS, WHEREIN SAID ASBESTOS IS EMBEDDED IN THE OUTER SURFACE OF SAID EXPANDED PERLITE, AND WHEREIN THE PROPORTION OF SAID ASBESTOS IN SAID AGGLOMARATE IS BETWEEN ABOUT 2% AND ABOUT 20% OF THE TOTAL WEIGHT OF ASBESTOS AND EXPANDED PERLITE.
Claim 2
Dependent Claim
51 words
AN AGGLOMARATE COMPRISED OF FIRMLY ADHERING PARTICLES OF EXPANDED PERLITE AND ASBETOS, WHEREIN SAID ASBESTOS IS EMBEDDED IN THE OUTER SURFACE OF SAID EXPANDED PERLITE, AND WHEREIN THE PROPORTION OF SAID ASBESTOS IN SAID AGGLOMARATE IS BETWEEN ABOUT 2% AND ABOUT 20% OF THE TOTAL WEIGHT OF ASBESTOS AND EXPANDED PERLITE.
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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |