Patent US3673095A successfully refreshed from Google Patents.
US3673095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil and grease absorbing composition comprising sphagnum moss, calcined gypsum and perlite
Assignee: RALPH H ARCHER
•
Filing: 1970-07-20
•
Granted: 1972-06-27
•
Expires: 1990-07-20
Abstract
Abstract An oil and grease absorbent composition contains comminuted sphagnum moss as a major ingredient and, as a minor ingredient, a sufficient amount of powdered calcined gypsum to render the mixture fire resistant. A minor amount of a lightweight friction material is also desirably added. A preferred composition is approximately 12 parts by volume of comminuted sphagnum moss and approximately 1 part each by volume of powdered calcined gypsum and heat expanded perlite.
Inventors
- 👤 Ralph H Archer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:20
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/103; B01J20/106; B01J20/04; B01J20/041; C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/122; C11D3/124; C11D3/1246; C11D3/128; C11D3/1293; C11D7/00; C11D7/22; C11D7/40; C11D7/44; B01J2220/00; B01J2220/40; B01J2220/42; B01J2220/48; B01J2220/4812; B01J2220/485
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
19 words
The composition of claim 1 which also contains a minor portion of a powdered heat expanded and pulverized perlite.
Claim 2
Dependent Claim
33 words
An oil and grease absorbing composition consisting essentially of a mixture of 12 parts by volume of comminuted sphagnum moss and approximately three-fourths to 1 1/2 parts by volume of powdered calcined gypsum.
Claim 3
Dependent Claim
22 words
The composition of claim 3 which also contains approximately one-half to 1 1/2 parts by volume of heat expanded and pulverized perlite.
Claim 4
Dependent Claim
26 words
The composition of claim 3 in which the sphagnum moss is composed of particles substantially all of which will pass through a standard 10 mesh screen.
References Cited (Backward Citations)
GB190001458A
Cited
US1451485A
Cited
US1606889A
Cited
US1841922A
Cited
US1617343A
Cited
US1820198A
Cited
US2496203A
Cited
US2728733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |