US4491605A
Expired / Lapsed
US
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Conductive polymers formed by ion implantation
Assignee: Massachusetts Institute of Technology
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Filing: 1982-06-23
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Granted: 1985-01-01
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Expires: 2002-06-23
Abstract
Abstract Conductive materials are formed by implanting high energy ions (30 keV to 300 keV) into rigid backboned polymers, such as poly (p-phenylene sulfide); conductivities on the order of 10 -3 (ohm-cm) -1 are demonstrated and the materials remain stable over periods as long as a year.
Inventors
- 👤 Harry Mazurek
- 👤 David R. Day
- 👤 Edward W. Maby
- 👤 Jonathan S. Abel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:57
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; B; B29; B29C; B29C59/00; B29C59/16; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128; B29C35/00; B29C35/02; B29C35/08; B29C35/0866; B29C2035/0872; B29K; B29K2049/00; B29K2065/00; B29K2081/00; B29K2081/04; B29K2995/00; B29K2995/0003; B29K2995/0005; B29L; B29L2031/00; B29L2031/34; B29L2031/3425; B29L2031/712; B29L2031/7146
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
37 words
A method of imparting conductivity to a material comprising a rigid backboned polymer, the method comprising bombarding the material with ions from a particle accelerator, the ions having a kinetic energy of about 50 or more KeV.
Claim 2
Independent Claim
37 words
A method of imparting conductivity to a material comprising a rigid backboned polymer, the method comprising bombarding the material with ions from a particle accelerator, the ions having a kinetic energy of about 50 or more KeV.
Claim 3
Independent Claim
37 words
A method of imparting conductivity to a material comprising a rigid backboned polymer, the method comprising bombarding the material with ions from a particle accelerator, the ions having a kinetic energy of about 100 or more KeV.
Claim 4
Independent Claim
37 words
A method of imparting conductivity to a material comprising a rigid backboned polymer, the method comprising bombarding the material with ions from a particle accelerator, the ions having a kinetic energy of about 100 or more KeV.
Claim 5
Dependent Claim
11 words
The method of claim 1 wherein the ions are positive ions.
Claim 6
Dependent Claim
26 words
The method of claim 1 wherein the method further comprises neutralizing the ions from the particle accelerator to form a neutral beam before bombarding the material.
Claim 7
Dependent Claim
35 words
The method of claim 1 wherein the step of implanting further comprises bombarding the material with a particle beam having a fluence ranging from about 10 13 to about 10 17 particles per square centimeter.
Claim 8
Dependent Claim
35 words
The method of claim 1 wherein the step of implanting further comprises bombarding the material with a particle beam having a fluence ranging from about 10 14 to about 10 16 particles per square centimeter.
Claim 9
Dependent Claim
32 words
The method of claim 1 wherein the polymer is at least one polymer chosen from the group of polyacetylene, poly (p-phenylene), poly (p-phenylene vinylene), polythiophene, polypyrrole, poly (1,6-heptadiyne) and poly (p-phenylene sulfide).
Claim 10
Dependent Claim
12 words
The method of claim 7 wherein the polymer is poly (p-phenylene sulfide).
Claim 11
Dependent Claim
12 words
The method of claim 1 wherein the ions essentially comprise bromine ions.
Claim 12
Dependent Claim
12 words
The method of claim 1 wherein the ions essentially comprise chlorine ions.
Claim 13
Dependent Claim
12 words
The method of claim 1 wherein the ions essentially comprise krypton ions.
Claim 14
Dependent Claim
12 words
The method of claim 1 wherein the ions essentially comprise arsenic ions.
References Cited (Backward Citations)
US3137633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1988-01-01 | 1988-07-02 | 1989-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-01 | 1992-07-02 | 1993-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-01 | 1996-07-02 | 1997-01-01 | $7700.00 | Window Closed / Lapsed |