Patents by Inventor Thomas F. Guarr
Thomas F. Guarr has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7193764Abstract: The present invention is directed to a reversible electrodeposition device comprising: a first substrate having an electrically conductive material associated therewith; a second substrate having an electrically conductive material associated therewith; a nucleation layer at least partially covering at least one of the electrically conductive materials of the first and second substrates; an electrochemical medium contained within a chamber positioned between the first and second substrates.Type: GrantFiled: September 20, 2004Date of Patent: March 20, 2007Assignee: Gentex CorporationInventors: Rongguang Lin, David Theiste, Thomas F. Guarr, Kathy E. Roberts
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Patent number: 7154657Abstract: An electrochromic window assembly is disclosed that includes a first substrate and a second substrate that is maintained in a parallel and spaced relation from the first substrate by means of a window frame and spacer. The window assembly further includes an electrochromic device mounted within the airtight chamber formed between the first and second substrates. Electrochromic device 22 may be mounted so as to provide an air chamber between first substrate 12, which is the external substrate, and electrochromic device 22. At least one of the chambers formed between substrates 12 and 14 and electrochromic device 22 may be filled with an insulating gas such as argon. Also disclosed are novel methods for manufacture of an electrochromic device for incorporation into such a window assembly. A novel electrochromic device is also disclosed having electrical bus clips secured about the entire periphery of the electrochromic device.Type: GrantFiled: November 14, 2005Date of Patent: December 26, 2006Assignee: Gentex CorporationInventors: David L. Poll, Kevin L. Ash, David A. Theiste, Thomas F. Guarr, William L. Tonar
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Patent number: 7075697Abstract: An electrochromic medium for use in a tristate electrochromic device, comprising: (a) at least one solvent; (b) at least one anodic material; (c) at least one cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic; (d) wherein, in a first state, the electrochromic medium exhibits a maximum light transmission; (e) wherein, in a second state, variable attenuation occurs to a significant extent in one of visible radiation or near-infrared radiation without significant attenuation in the other; and (f) wherein, in a third state, variable attenuation occurs to a significant extent in the other spectral region.Type: GrantFiled: September 27, 2005Date of Patent: July 11, 2006Assignee: Gentex CorporationInventors: Punam Giri, Thomas F. Guarr
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Patent number: 7046418Abstract: The present invention is directed to a reversible electrodeposition device comprising: a first substrate having an electrically conductive material associated therewith; a second substrate having an electrically conductive material associated therewith; a nucleation layer at least partially covering at least one of the electrically conductive materials of the first and second substrates; an electrochemical medium contained within a chamber positioned between the first and second substrates which comprises: at least one solvent; an anodic electroactive material; and cathodic electroactive material; and compositions and/or concentrations associated with the electrochemical medium which enhances the electrochemical performance of the electrodeposition device.Type: GrantFiled: October 8, 2003Date of Patent: May 16, 2006Assignee: Gentex CorporationInventors: Rongguang Lin, David A. Theiste, Thomas F. Guarr
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Patent number: 7031044Abstract: An electrochromic medium for use in an electrochromic device comprising: at least one solvent; an anodic electroactive material; a cathodic electroactive material, wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and a current-reducing additive, wherein the current-reducing additive comprises a polymer present in an effective concentration to materially reduce the current of the electrochromic medium upon application of an electrical potential, relative to an electrochromic medium without the current-reducing additive, while maintaining an electrochromic medium viscosity which facilitates acceptable production rates without a problematic degree of seal or other device component failure.Type: GrantFiled: July 2, 2004Date of Patent: April 18, 2006Assignee: Gentex CorporationInventors: Kathy E. Roberts, Thomas F. Guarr
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Patent number: 7031043Abstract: An electrochromic device comprising: a first substantially transparent substrate having an electrically conductive material associated therewith; a second substrate having an electrically conductive material associated therewith; and an electrochromic medium contained within a chamber positioned between the first and second substrates which comprises: at least one solvent; an anodic material; a cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic, and wherein at least one of the anodic and cathodic materials is slow-diffusing; and an electron shuttle, wherein the electron shuttle serves to decrease switching time of the electrochromic device relative to the same without the electron shuttle.Type: GrantFiled: January 7, 2004Date of Patent: April 18, 2006Assignee: Gentex CorporationInventors: Kathy E. Roberts, Rongguang Lin, Kelvin L. Baumann, Thomas F. Guarr, David A. Theiste
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Patent number: 7001540Abstract: An electrochromic medium for use in an electrochromic device comprising: at least one solvent; a cathodic electroactive material; an anodic electroactive material; wherein at least one of the cathodic and anodic electroactive materials is electrochromic; and a self-healing cross-linked polymer gel.Type: GrantFiled: September 15, 2003Date of Patent: February 21, 2006Assignee: Gentex CorporationInventors: Leroy J. Kloeppner, Thomas F. Guarr, Kevin L. Ash, Kathy E. Roberts
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Patent number: 6972888Abstract: An electrochromic window assembly is disclosed that includes a first substrate and a second substrate that is maintained in a parallel and spaced relation from the first substrate by means of a window frame and spacer. The window assembly further includes an electrochromic device mounted within the airtight chamber formed between the first and second substrates. Electrochromic device 22 may be mounted so as to provide an air chamber between first substrate 12, which is the external substrate, and electrochromic device 22. At least one of the chambers formed between substrates 12 and 14 and electrochromic device 22 may be filled with an insulating gas such as argon. Also disclosed are novel methods for manufacture of an electrochromic device for incorporation into such a window assembly. A novel electrochromic device is also disclosed having electrical bus clips secured about the entire periphery of the electrochromic device.Type: GrantFiled: January 10, 2005Date of Patent: December 6, 2005Assignee: Gentex CorporationInventors: David L. Poll, Kevin L. Ash, David A. Theiste, Thomas F. Guarr, William L. Tonar
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Patent number: 6876479Abstract: An electrochromic medium for use in a tristate electrochromic device, comprising: (a) at least one solvent; (b) at least one anodic material; (c) at least one cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic; (d) wherein, in a first state, the electrochromic medium exhibits a maximum light transmission; (e) wherein, in a second state, variable attenuation occurs to a significant extent in one of visible radiation or near-infrared radiation without significant attenuation in the other; and (f) wherein, in a third state, variable attenuation occurs to a significant extent in the other spectral region.Type: GrantFiled: May 21, 2004Date of Patent: April 5, 2005Assignee: Gentex CorporationInventors: Punam Giri, Thomas F. Guarr
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Patent number: 6876478Abstract: An electrochromic medium for use in a normally operating electrochromic device comprising an anodic material and a cathodic material wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic, an additive, and means associated with the additive for maintaining a colorless or nearly colorless electrochromic medium while the electrochromic medium is in a high transmission state relative to an electrochromic medium without the additive.Type: GrantFiled: February 18, 2004Date of Patent: April 5, 2005Assignee: Gentex CorporationInventors: Jeffrey R. Lomprey, Thomas F. Guarr
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Patent number: 6876477Abstract: An electrochromic device comprising: (a) a first substantially transparent substrate having an electrically conductive material associated therewith; (b) a second substrate having an electrically conductive material associated therewith; (c) an electrochromic medium contained within a chamber positioned between the first and second substrates which comprises: (1) a solvent; (2) a cathodic electroactive material; (3) an anodic electroactive material, wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and (4) a color-stabilizing additive, wherein the color-stabilizing additive is electroactive within a normal operating voltage of the electrochromic device; and (d) means associated with the color-stabilizing additive for maintaining an at least nearly colorless electrochromic device while the electrochromic device is in an open circuit and/or zero potential state relative to the same device without the color-stabilizing additive.Type: GrantFiled: January 7, 2004Date of Patent: April 5, 2005Assignee: Gentex CorporationInventors: Jeffrey R. Lomprey, Thomas F. Guarr
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Patent number: 6842276Abstract: An electrochromic window assembly is disclosed that includes a first substrate and a second substrate that is maintained in a parallel and spaced relation from the first substrate by means of a window frame and spacer. The window assembly further includes an electrochromic device mounted within the airtight chamber formed between the first and second substrates. Electrochromic device 22 may be mounted so as to provide an air chamber between first substrate 12, which is the external substrate, and electrochromic device 22. At least one of the chambers formed between substrates 12 and 14 and electrochromic device 22 may be filled with an insulating gas such as argon. Also disclosed are novel methods for manufacture of an electrochromic device for incorporation into such a window assembly. A novel electrochromic device is also disclosed having electrical bus clips secured about the entire periphery of the electrochromic device. Also disclosed is the use of steel bus clips for the electrochromic device.Type: GrantFiled: November 14, 2003Date of Patent: January 11, 2005Assignee: Gentex CorporationInventors: David L. Poll, Kevin L. Ash, David A. Theiste, Thomas F. Guarr, William L. Tonar
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Publication number: 20040240028Abstract: An electrochromic medium for use in a normally operating electrochromic device comprising an anodic material and a cathodic material wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic, an additive, and means associated with the additive for maintaining a colorless or nearly colorless electrochromic medium while the electrochromic medium is in a high transmission state relative to an electrochromic medium without the additive.Type: ApplicationFiled: February 18, 2004Publication date: December 2, 2004Inventors: Jeffrey R. Lomprey, Thomas F. Guarr
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Publication number: 20040233501Abstract: An electrochromic device comprising: (a) a first substantially transparent substrate having an electrically conductive material associated therewith; (b) a second substrate having an electrically conductive material associated therewith; (c) an electrochromic medium contained within a chamber positioned between the first and second substrates which comprises: (1) a solvent; (2) a cathodic electroactive material; (3) an anodic electroactive material, wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and (4) a color-stabilizing additive, wherein the color-stabilizing additive is electroactive within a normal operating voltage of the electrochromic device; and (d) means associated with the color-stabilizing additive for maintaining an at least nearly colorless electrochromic device while the electrochromic device is in an open circuit and/or zero potential state relative to the same device without the color-stabilizing additive.Type: ApplicationFiled: January 7, 2004Publication date: November 25, 2004Inventors: Jeffrey R. Lomprey, Thomas F. Guarr
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Publication number: 20040233500Abstract: An electrochromic device comprising: a first substantially transparent substrate having an electrically conductive material associated therewith; a second substrate having an electrically conductive material associated therewith; and an electrochromic medium contained within a chamber positioned between the first and second substrates which comprises: at least one solvent; an anodic material; a cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic, and wherein at least one of the anodic and cathodic materials is slow-diffusing; and an electron shuttle, wherein the electron shuttle serves to decrease switching time of the electrochromic device relative to the same without the electron shuttle.Type: ApplicationFiled: January 7, 2004Publication date: November 25, 2004Inventors: Kathy E. Roberts, Rongguang Lin, Kelvin L. Baumann, Thomas F. Guarr, David A. Theiste
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Patent number: 6778311Abstract: An electrochromic medium for use in an electrochromic device comprising: at least one solvent; an anodic electroactive material; a cathodic electroactive material, wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and a current-reducing additive, wherein the current-reducing additive comprises a polymer present in an effective concentration to materially reduce the current of the electrochromic medium upon application of an electrical potential, relative to an electrochromic medium without the current-reducing additive, while maintaining an electrochromic medium viscosity which facilitates acceptable production rates without a problematic degree of seal or other device component failure.Type: GrantFiled: February 21, 2003Date of Patent: August 17, 2004Assignee: Gentex CorporationInventors: Kathy E. Roberts, Thomas F. Guarr
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Publication number: 20040095631Abstract: An electrochromic window assembly is disclosed that includes a first substrate and a second substrate that is maintained in a parallel and spaced relation from the first substrate by means of a window frame and spacer. The window assembly further includes an electrochromic device mounted within the airtight chamber formed between the first and second substrates. Electrochromic device 22 may be mounted so as to provide an air chamber between first substrate 12, which is the external substrate, and electrochromic device 22. At least one of the chambers formed between substrates 12 and 14 and electrochromic device 22 may be filled with an insulating gas such as argon. Also disclosed are novel methods for manufacture of an electrochromic device for incorporation into such a window assembly. A novel electrochromic device is also disclosed having electrical bus clips secured about the entire periphery of the electrochromic device. Also disclosed is the use of steel bus clips for the electrochromic device.Type: ApplicationFiled: November 14, 2003Publication date: May 20, 2004Inventors: David L. Poll, Kevin L. Ash, David A. Theiste, Thomas F. Guarr, William L. Tonar
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Patent number: 6735011Abstract: An electrochromic medium for use in a normally operating electrochromic device comprising an anodic material and a cathodic material wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic, an additive, and means associated with the additive for maintaining a colorless or nearly colorless electrochromic medium while the electrochromic medium is in a high transmission state relative to an electrochromic medium without the additive.Type: GrantFiled: November 25, 2002Date of Patent: May 11, 2004Assignee: Gentex CorporationInventors: Jeffrey R. Lomprey, Thomas F. Guarr
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Publication number: 20040061097Abstract: An electrochromic medium for use in an electrochromic device comprising:Type: ApplicationFiled: September 15, 2003Publication date: April 1, 2004Inventors: Leroy J. Kloeppner, Thomas F. Guarr, Kevin L. Ash, Kathy E. Roberts
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Patent number: 6710906Abstract: An electrochromic medium for use in an electrochromic device comprising: at least one solvent; an anodic electroactive material; a cathodic electroactive material; wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and wherein at least one of the anodic and cathodic electroactive materials is associated with a diffusion coefficient controlling moiety which serves to lower the diffusion coefficient of the associated material relative to the same without the diffusion coefficient controlling moiety.Type: GrantFiled: November 13, 2001Date of Patent: March 23, 2004Assignee: Gentex CorporationInventors: Thomas F. Guarr, Kathy E. Roberts, Rongguang Lin, Kelvin L. Baumann, David A. Theiste, Punam Giri, Elizabeth M. Sanford