US4328203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microbial insecticide
Assignee: Washington State University
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Filing: 1980-09-15
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Granted: 1982-05-04
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Expires: 2000-09-15
Abstract
Abstract An improved microbial insecticide composition, and methods for the production and utilization thereof, are disclosed. The disclosed composition comprises a microbial insect pathogen of viral, bacterial, or fungal origin which is susceptible to sunlight-induced inactivation embedded in a coacervate microbead which is comprised of a nucleic acid, typically RNA, and a proteinaceous material, whereby the microbead structure itself effectively shields the agent from sunlight-induced inactivation. The microbead is typically stabilized by chemical crosslinking.
Inventors
- 👤 Kemet D. Spence
- 👤 Robert E. Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:01
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/26; A01N25/28; A01N63/00; A01N63/20; A01N63/22; A01N63/23; A01N63/27; A01N63/40
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
An insecticidal composition comprising a microbial agent in combination with at least one of its biologically active chemical products embedded in a coacervate microbead having an effective diameter within the range of from about 10 to about 200 microns which is comprised of a nucleic acid and a proteinaceous material admixed in a nucleic acid to proteinaceous material ratio in the range of from about 1:5 to about 5:1.
Claim 2
Dependent Claim
69 words
An insecticidal composition comprising a microbial agent in combination with at least one of its biologically active chemical products embedded in a coacervate microbead having an effective diameter within the range of from about 10 to about 200 microns which is comprised of a nucleic acid and a proteinaceous material admixed in a nucleic acid to proteinaceous material ratio in the range of from about 1:5 to about 5:1.
Claim 3
Dependent Claim
15 words
The insecticidal composition of claim 1, wherein the microbead is further stabilized by chemical crosslinking.
Claim 4
Dependent Claim
13 words
The insecticidal composition of claim 1, wherein the nucleic acid comprises ribonucleic acid.
Claim 5
Dependent Claim
19 words
The insecticidal composition of claim 1, wherein the proteinaceous material comprises hemoglobin, protamine, or a synthetic amino acid polymer.
Claim 6
Dependent Claim
24 words
The insecticidal composition of claim 1, wherein the effective diameter of the microbead is within the range from about 40 to about 100 microns.
Claim 7
Dependent Claim
96 words
An insecticidal composition comprising a microbial agent in combination with at least one of its biologically active chemical products, said microbial agent and chemical products being susceptible to environmentally-induced inactivation and being embedded in a coacervate microbead having an effective diameter within the range of from about 10 to about 200 microns which is comprised of a nucleic acid and a proteinaceous material admixed in a nucleic acid to proteinaceous material ratio in the range of from about 1:5 to about 5:1, whereby the microbead structure effectively shields said agent and chemical products from environmentally-induced inactivation.
Claim 8
Dependent Claim
96 words
An insecticidal composition comprising a microbial agent in combination with at least one of its biologically active chemical products, said microbial agent and chemical products being susceptible to environmentally-induced inactivation and being embedded in a coacervate microbead having an effective diameter within the range of from about 10 to about 200 microns which is comprised of a nucleic acid and a proteinaceous material admixed in a nucleic acid to proteinaceous material ratio in the range of from about 1:5 to about 5:1, whereby the microbead structure effectively shields said agent and chemical products from environmentally-induced inactivation.
Claim 9
Dependent Claim
27 words
The insecticidal composition of claims 1 or 6 wherein the microorganisms and chemical products possess an essentially uniform surface charge when they are embedded in the microbead.
Claim 10
Independent Claim
28 words
A method for controlling insect pests in insect-infested areas, which comprises applying an effective amount of the insecticide composition of claims 1 or 6 to said insect-infested areas.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |