US3989498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of odor control
Assignee: Individual
•
Filing: 1975-06-23
•
Granted: 1976-11-02
•
Expires: 1995-06-23
Abstract
Abstract For the purpose of controlling odor, a slurry of digested sewage sludge to be sprayed on land for restoring its fertility is mixed with a deodorant composition containing glacial acetic acid and amyl alcohol and optionally other components including 2,3-butanedione, sulfuric acid, hydrochloric acid, benzaldehyde and copper sulfate.
Inventors
- 👤 James P. Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:43
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/01; C; C05; C05F; C05F7/00; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/20; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/916
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
29 words
The method of restoring fertility to land, which comprises applying to the land a slurry of sewage sludge and the deodorant composition comprising amyl alcohol and glacial acetic acid.
Claim 2
Independent Claim
29 words
The method of restoring fertility to land, which comprises applying to the land a slurry of sewage sludge and the deodorant composition comprising amyl alcohol and glacial acetic acid.
Claim 3
Dependent Claim
14 words
The method defined in claim 1, in which the sewage sludge is digested sludge.
Claim 4
Dependent Claim
17 words
The method defined in claim 1, in which the slurry includes from 1% to 10% digested solids.
Claim 5
Dependent Claim
17 words
The method defined in claim 1, in which the slurry includes from 3% to 6% digested solids.
Claim 6
Dependent Claim
22 words
The method defined in claim 1, in which the sludge and the deodorant composition are mixed together prior to application to land.
Claim 7
Dependent Claim
16 words
The method defined in claim 5, in which the mixed slurry is sprayed onto the land.
References Cited (Backward Citations)
US38748A
Cited
US51216A
Cited
US125886A
Cited
US3019223A
Cited
US3072524A
Cited
US2250345A
Cited
US3276186A
Cited
US3413218A
Cited
US3459852A
Cited
US3509254A
Cited
NL6906485A
Cited
DE1938634A1
Cited
US3821413A
Cited
US3883303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |