US4375359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water based fireside additive
Assignee: Grace Dearborn Inc
•
Filing: 1979-11-02
•
Granted: 1983-03-01
•
Expires: 1999-11-02
Abstract
Abstract Fireside additive is introduced into oil-fired furnace as aqueous solution via oil-water homogenizer feeding to burner.
Inventors
- 👤 Stuart R. Chapman
- 👤 F. Ross Pollard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:12
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/04; C10L1/00; C10L1/10; C10L1/12; C10L10/02; F; F23; F23J; F23J7/00; C10L1/1233; C10L1/1241; C10L1/1275
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
29 words
The method of introducing a water-soluble fireside additive into an oil-fired furnace equipped with a homogenizer, fuel feed comprising adding the additive as an aqueous solution into the homogenizer.
Claim 2
Independent Claim
29 words
The method of introducing a water-soluble fireside additive into an oil-fired furnace equipped with a homogenizer, fuel feed comprising adding the additive as an aqueous solution into the homogenizer.
Claim 3
Dependent Claim
29 words
Method according to claim 1 in which the total water going into the homogenizer, including that with the additive, is about 0.2 to 10% by volume of the oil.
Claim 4
Dependent Claim
21 words
Method according to claim 2 in which the additive solution is about 0.01 to 20% by volume of the total water.
Claim 5
Dependent Claim
31 words
Method according to claim 1 in which the additive is a member selected from the group consisting of a salt of Mn, Cu, Mg, Al, Fe, Pb, Zn, and mixes thereof.
Claim 6
Dependent Claim
12 words
Method according to claim 4 in which the salt is a sulfate.
Claim 7
Dependent Claim
40 words
Method according to claim 5 in which the additive is a mixture of 10% copper sulfate and 20% manganese sulphate in water, added at the rate of one gallon of said solution per 4000 gallons of oil to the furnace.
Claim 8
Dependent Claim
26 words
Method according to claim 6 in which the solution of additive is added to water in the homogenizer in gallons at the rate of about 1:127.
Claim 9
Dependent Claim
16 words
Method according to claim 4 in which the additive: total water weight ratio is about 3:7.
References Cited (Backward Citations)
US3089539A
Cited
US3120864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-28 | 1986-08-30 | 1987-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-28 | 1990-08-30 | 1991-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-28 | 1994-08-30 | 1995-03-01 | $7700.00 | Window Closed / Lapsed |