US4067818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust laying
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1977-01-21
•
Granted: 1978-01-10
•
Expires: 1997-01-21
Abstract
Abstract An aqueous dust laying formulation containing up to 2% by weight of an alkyl orthoxylene sulphonate the alkyl group containing from 8 to 11 carbons.
Inventors
- 👤 Pierre Dominique Marin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:25
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/22; E; E21; E21F; E21F5/00; E21F5/02; E21F5/06; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
33 words
A formulation for laying dust comprising water containing up to 2% by weight of a water-soluble salt of an alkyl orthoxylene sulphonic acid in which the alkyl group contains from 9 carbon atoms.
Claim 2
Dependent Claim
33 words
A formulation for laying dust comprising water containing up to 2% by weight of a water-soluble salt of an alkyl orthoxylene sulphonic acid in which the alkyl group contains from 9 carbon atoms.
Claim 3
Dependent Claim
17 words
A formulation according to claim 1 in which the cation of the salt is an alkali metal.
Claim 4
Dependent Claim
17 words
A formulation according to claim 1 containing from 500 to 5000 parts per million of the sulphonate.
Claim 5
Dependent Claim
17 words
A process for laying dust comprising spraying the dusty area with a formulation according to claim 1.
Claim 6
Dependent Claim
16 words
A process for laying coal dust comprising spraying said dust with the formulation of claim 2.
References Cited (Backward Citations)
CA448760A
Cited
US2617772A
Cited
US2467132A
Cited
GB677279A
Cited
US2646361A
Cited
US2786815A
Cited
DE1000766B
Cited
US3690727A
Cited
FR2288775A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |