US3785798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biologically active particulate material and the process for manufacturing same
Assignee: ISP Investments LLC
•
Filing: 1970-10-19
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Granted: 1974-01-15
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Expires: 1990-10-19
Abstract
Abstract Biologically active particulate material capable of releasing a biochemical at a controlled rate due to the change of environmental conditions, is manufactured by coating granules in the range of 10 to 50 mesh with a biochemical and a silicate binder and thereafter partially insolubilizing the binder.
Inventors
- 👤 J Horai
- 👤 S Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:23
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/26
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
20 words
The process of claim 1 employing dense mineral granules having a size in the range between 10 and 40 mesh.
Claim 2
Dependent Claim
36 words
The process of claim 1 wherein the acidic pickling composition contains as the active acid pickling agent a member selected from the group consisting of ammonium chloride, aluminum chloride, calcium chloride, hydrochloric acid, and mixtures thereof.
Claim 3
Dependent Claim
13 words
The process of claim 3 wherein the acid pickling agent is aluminum chloride.
Claim 4
Dependent Claim
20 words
The process of claim 4 employing dense mineral granules having a size in the range between 10 and 40 mesh.
Claim 5
Dependent Claim
75 words
The process of claim 5 employing one ton of the dense mineral granules, 100 pounds of the pesticide, 40 to 80 pounds of potassium silicate having a ratio of K2O:SiO2 of 1:2.50 and 10 to 25 pounds of water as the alkali silicate solution, 5 pounds of 28% aluminum chloride solution as the acidic pickling composition, and the silicate coated granules are dried at about 150*F. prior to reacting same with the acidic pickling composition.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |