US3284209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Re-expanding compressed exfoliated vermiculite
Assignee: WR Grace and Co
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Filing: 1960-10-06
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Granted: 1966-11-08
•
Expires: 1980-10-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:26
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2009; A23; A23K; A23K20/00; A23K20/20; A23K20/28; B; B32; B32B; B32B27/00; C; C04; C04B; C04B14/00; C04B14/02; C04B14/04; C04B14/20; C04B14/204; Y; Y10; Y10S; Y10S71/00; Y10S71/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
IN THE PROCESS OF RE-EXPANDING COMPRESSED EXFOLIATED VERMICULITE WHICH HAS BEEN FORMED INTO A UNITARY, SELFSUPPORTING STRUCTURE HAVING A DENSITY OF ABOUT 40-130 POUNDS PER CUBIC FOOT BY SUBJECTION TO SEVERE COMPRESSIVE FORCES THE IMPROVEMENT WHICH COMPRISES CONTACTING SAID STRUCTURE OF COMPRESSED EXFOLIATED VERMICULITE AFTER SUBJECTION TO SEVERE COMPRESSIVE FORCES WITH AN AQUEOUS FLUID.
Claim 2
Dependent Claim
54 words
IN THE PROCESS OF RE-EXPANDING COMPRESSED EXFOLIATED VERMICULITE WHICH HAS BEEN FORMED INTO A UNITARY, SELFSUPPORTING STRUCTURE HAVING A DENSITY OF ABOUT 40-130 POUNDS PER CUBIC FOOT BY SUBJECTION TO SEVERE COMPRESSIVE FORCES THE IMPROVEMENT WHICH COMPRISES CONTACTING SAID STRUCTURE OF COMPRESSED EXFOLIATED VERMICULITE AFTER SUBJECTION TO SEVERE COMPRESSIVE FORCES WITH AN AQUEOUS FLUID.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |