Patent US5390073A successfully refreshed from Google Patents.
US5390073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric material containing dipolar molecules
Assignee: General Atomics Corp
•
Filing: 1993-01-11
•
Granted: 1995-02-14
•
Expires: 2013-01-11
Abstract
Abstract Dielectric materials having a high dipole moment density are provided. The high dipole moment density is achieved by the use of a substituted α-amino acid, such as N-trimethyl glycine and related homologues having nonpolar sidechain groups, with three alkyl substitutions on the nitrogen of the α-amino group. These molecules have a high dipole moment and small volume, allowing rapid rotation around the α-amino, carboxyl dipole. N-trimethyl glycine alone or in combination with one or more homologues is preferably provided as a solute in a liquid dielectric solution. Alternatively, these molecules are provided as substituents on a linear polymer.
Inventors
- 👤 William G. McMillan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:59
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/14; H01G4/18; H01G4/20; H01G4/22; H01G4/221; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
63 words
A capacitor including at least two electrodes separated by a dielectric material, wherein said dielectric material comprises at least one N-trialkyl substituted α-amino acid of the formula: ##STR2## wherein R 1 is chosen from the group consisting of hydrogen and a non-polar group; and R 2 , R 3 , and R 4 are alkyl groups having no more than three carbon atoms.
Claim 2
Dependent Claim
63 words
A capacitor including at least two electrodes separated by a dielectric material, wherein said dielectric material comprises at least one N-trialkyl substituted α-amino acid of the formula: ##STR2## wherein R 1 is chosen from the group consisting of hydrogen and a non-polar group; and R 2 , R 3 , and R 4 are alkyl groups having no more than three carbon atoms.
Claim 3
Dependent Claim
22 words
The capacitor according to claim 1 wherein said alkyl groups R 2 , R 3 , and R 4 are methyl groups.
Claim 4
Dependent Claim
14 words
The capacitor according to claim 2 wherein said trialkyl substituted material includes N-trimethyl glycine.
Claim 5
Dependent Claim
22 words
The capacitor according to claim 3 wherein said dielectric material includes a solution wherein such N-trimethyl glycine is present as a solute.
Claim 6
Dependent Claim
26 words
The capacitor according to claim 4 wherein said solution includes a polar solvent selected from the group consisting of methyl alcohol, ethyl alcohol, and ethyl ether.
Claim 7
Dependent Claim
21 words
The capacitor according to claim 3 wherein said dielectric material includes a polymer component having N-trimethyl glycine as a substituent thereupon.
Claim 8
Dependent Claim
37 words
The capacitor according to claim 6 wherein said N-trimethyl glycine is attached to said polymer by removal of a hydrogen atom from one of the methyl groups, R 2 , R 3 , or R 4 .
Claim 9
Dependent Claim
13 words
The capacitor of claim 7 wherein said polymer has a linear backbone chain.
Claim 10
Dependent Claim
60 words
An electrical capacitor comprising a housing, a capacitance section within said housing, said section having at least one pair of spaced-apart electrodes and a dielectric material between said electrodes, wherein said dielectric material comprises a polymer component having N-trimethyl glycine as a substituent which is attached to said polymer component through one of the methyl groups of said N-trimethyl glycine.
Claim 11
Dependent Claim
60 words
An electrical capacitor comprising a housing, a capacitance section within said housing, said section having at least one pair of spaced-apart electrodes and a dielectric material between said electrodes, wherein said dielectric material comprises a polymer component having N-trimethyl glycine as a substituent which is attached to said polymer component through one of the methyl groups of said N-trimethyl glycine.
Claim 12
Dependent Claim
15 words
The capacitor of claim 9 wherein said dielectric material comprises a polymer of methyl methacrylate.
Claim 13
Dependent Claim
54 words
An electric capacitor of small size and compact energy-density, capable of delivering large amounts of power, which capacitor comprises a housing, a capacitance section within said housing, said section having at least one pair of spaced-apart electrodes and a dielectric material between said electrodes, wherein said dielectric material comprises a solution including N-trimethyl glycine.
Claim 14
Dependent Claim
54 words
An electric capacitor of small size and compact energy-density, capable of delivering large amounts of power, which capacitor comprises a housing, a capacitance section within said housing, said section having at least one pair of spaced-apart electrodes and a dielectric material between said electrodes, wherein said dielectric material comprises a solution including N-trimethyl glycine.
Claim 15
Dependent Claim
31 words
The capacitor of claim 11 wherein the dielectric is in a liquid solution consisting of a polar solvent selected from the group including of methyl alcohol, ethyl alcohol, and ethyl ester.
References Cited (Backward Citations)
US3499791A
Cited
US3684932A
Cited
US3740625A
Cited
US3774090A
Cited
US3855508A
Cited
US4586111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-13 | 1998-08-15 | 1999-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-13 | 2002-08-15 | 2003-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-13 | 2006-08-15 | 2007-02-14 | $7700.00 | Window Closed / Lapsed |