US3962067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of an aqueous solution of silicoformic acid
Assignee: Individual
•
Filing: 1975-09-04
•
Granted: 1976-06-08
•
Expires: 1995-09-04
Abstract
Abstract Silicoformic acid granules will go into solution when mixed in a dilute aqueous solution of an alkali metal hydroxide or an alkali metal salt of a weak acid.
Inventors
- 👤 David H. Blount
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:22
CPC Classifications
C; C01; C01B; C01B33/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
63 words
The method of preparing an aqueous solution of silicoformic acid by the steps of: a. mixing together silicoformic acid and an alkali metal hydroxide in the ratio of about 5:1 by weight in an aqueous solution, b. heating the said mixture to about 60°-100° C, c. stirring the said mixture for about 10-20 minutes, thereby d. preparing an aqueous solution of silicoformic acid.
Claim 2
Independent Claim
63 words
The method of preparing an aqueous solution of silicoformic acid by the steps of: a. mixing together silicoformic acid and an alkali metal hydroxide in the ratio of about 5:1 by weight in an aqueous solution, b. heating the said mixture to about 60°-100° C, c. stirring the said mixture for about 10-20 minutes, thereby d. preparing an aqueous solution of silicoformic acid.
Claim 3
Dependent Claim
14 words
The method according to claim 1 wherein the alkali metal hydroxide is sodium hydroxide.
Claim 4
Dependent Claim
14 words
The method according to claim 1 wherein the alkali metal hydroxide is potassium hydroxide.
Claim 5
Dependent Claim
33 words
The method according to claim 1 wherein the alkali metal hydroxide is replaced with sodium metasilicate and mixed with silicoformic acid in an aqueous solution in the ratio of about 2:3 by weight.
Claim 6
Dependent Claim
33 words
The method according to claim 1 wherein the alkali metal hydroxide is replaced with sodium silicoformate and mixed with silicoformic acid in an aqueous solution in the ratio of about 2:5 by weight.
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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |