Patent US4582724A successfully refreshed from Google Patents.
US4582724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical Bonding Agent for the suppression of "rusty bolt" Intermodulation Interference
Assignee: United States Department of the Navy
•
Filing: 1985-04-23
•
Granted: 1986-04-15
•
Expires: 2005-04-23
Abstract
Abstract A Chemical Bonding Agent composition suitable for reducing Intermodulation Interference caused by "rusty bolts" which comprises a complexing polymer, a metal salt, a mild reducing agent, and a suitable solvent.
Inventors
- 👤 John C. Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:43
CPC Classifications
C; C23; C23F; C23F11/00; C09; C09D; C09D5/00; C09D5/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
A method for reducing Intermodulation Interference which comprises the steps of: contacting a metal-oxide-metal junction with a Chemical Bonding Agent composition comprising between about 10 and 90 percent by weight of a complexing polymer, between about 10 and 80 percent by weight of a solvent, between about 0 and 40 percent by weight of a metal salt, and between about 0 and 35 percent by weight of a reducing agent; penetrating the metal-oxide-metal junction by complexing the metal ions in said metal-oxide-metal junction with said complexing polymer; reducing said metal ions in said metal-oxide-metal junction to low or zero valent metal thereby producing a conductive mixture and insuring good electrical contact between said composition and said metal-oxide-metal junction; and inhibiting future metal-oxide-metal junctions by cross-linking said complexing polymer with said metal ions from said junction thus forming a hardened material which remains in place to form a linear conductive path between the metal-metal junction.
Claim 2
Independent Claim
154 words
A method for reducing Intermodulation Interference which comprises the steps of: contacting a metal-oxide-metal junction with a Chemical Bonding Agent composition comprising between about 10 and 90 percent by weight of a complexing polymer, between about 10 and 80 percent by weight of a solvent, between about 0 and 40 percent by weight of a metal salt, and between about 0 and 35 percent by weight of a reducing agent; penetrating the metal-oxide-metal junction by complexing the metal ions in said metal-oxide-metal junction with said complexing polymer; reducing said metal ions in said metal-oxide-metal junction to low or zero valent metal thereby producing a conductive mixture and insuring good electrical contact between said composition and said metal-oxide-metal junction; and inhibiting future metal-oxide-metal junctions by cross-linking said complexing polymer with said metal ions from said junction thus forming a hardened material which remains in place to form a linear conductive path between the metal-metal junction.
Claim 3
Dependent Claim
26 words
The method of claim 1, wherein said complexing polymer in said contacting step is selected from a group consisting of polyamines, acrylamides, ketoamides and linear polyketones.
Claim 4
Dependent Claim
24 words
The method of claim 2, wherein said complexing polymer in said contacting step is selected from a group consisting of poly(N-vinylphthalamide) and polyvinyl pyrrolidone.
Claim 5
Dependent Claim
22 words
The method of claim 3, wherein said solvent in said contacting step is selected from a group consisting of alcohol and water.
Claim 6
Dependent Claim
30 words
The method of claim 4, wherein said metal in said metal salt in said contacting step is selected from the group consisting of silver, copper, zinc, mercury, iron, or cadmium.
Claim 7
Dependent Claim
26 words
The method of claim 5, wherein said reducing agent in said contacting step is selected from the group consisting of ascorbic acid, erythorbic acid, and hydroxylamine.
Claim 8
Dependent Claim
44 words
The method of claim 6, wherein said composition in said contacting step comprises about 13 percent by weight of PVP, about 13 percent by weight of erythrobic acid, about 6 percent by weight of silver nitrate, and about 68 percent by weight of water.
Claim 9
Independent Claim
141 words
A method for reducing Intermodulation Interference which comprises the steps of: contacting a metal-oxide-metal junction with a Chemical Bonding Agent composition comprising between about 13 percent by weight of PVP, about 13 percent by weight of erythrobic acid, about 6 percent by weight of silver nitrate, and about 68 percent by weight of water; penetrating the metal-oxide-metal junction by complexing the metal ions in said metal-oxide-metal junction with said complexing polymer; reducing said metal ions in said metal-oxide-metal junction to low or zero valent metal thereby producing a conductive mixture and insuring good electrical contact between said composition and said metal surfaces in said junction; and inhibiting future metal-oxide-metal junctions by cross-linking said complexing polymer with said metal ions from said junction thus forming a hardened material which remains in place to form a linear conductive path between the metal-metal junction.
Claim 10
Independent Claim
141 words
A method for reducing Intermodulation Interference which comprises the steps of: contacting a metal-oxide-metal junction with a Chemical Bonding Agent composition comprising between about 13 percent by weight of PVP, about 13 percent by weight of erythrobic acid, about 6 percent by weight of silver nitrate, and about 68 percent by weight of water; penetrating the metal-oxide-metal junction by complexing the metal ions in said metal-oxide-metal junction with said complexing polymer; reducing said metal ions in said metal-oxide-metal junction to low or zero valent metal thereby producing a conductive mixture and insuring good electrical contact between said composition and said metal surfaces in said junction; and inhibiting future metal-oxide-metal junctions by cross-linking said complexing polymer with said metal ions from said junction thus forming a hardened material which remains in place to form a linear conductive path between the metal-metal junction.
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) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |