Patents by Inventor Roger Boggs
Roger Boggs 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: 8258080Abstract: Provided are methods of applying a tissue marking to a tissue and rendering said tissue marking colorless when desired, comprising implanting into the tissue an amount of the tissue marking in sufficient quantity to form a detectable marking, said tissue marking comprising at least one colored compound comprising a thermally activatable fragmentation group and at least one infrared absorbing compound, wherein the at least one colored compound is capable of being rendered colorless by unimolecular fragmentation of the thermally activatable fragmentation group when the tissue marking is non-imagewise exposed by a source of infrared radiation and applying sufficient infrared radiation to a sufficient amount of the tissue marking to render the tissue marking colorless when desired.Type: GrantFiled: September 15, 2011Date of Patent: September 4, 2012Assignee: Performance Indicator, LLCInventors: Satish Agrawal, Roger Boggs
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Publication number: 20120003301Abstract: Provided are methods of applying a tissue marking to a tissue and rendering said tissue marking colorless when desired, comprising implanting into the tissue an amount of the tissue marking in sufficient quantity to form a detectable marking, said tissue marking comprising at least one colored compound comprising a thermally activatable fragmentation group and at least one infrared absorbing compound, wherein the at least one colored compound is capable of being rendered colorless by unimolecular fragmentation of the thermally activatable fragmentation group when the tissue marking is non-imagewise exposed by a source of infrared radiation and applying sufficient infrared radiation to a sufficient amount of the tissue marking to render the tissue marking colorless when desired.Type: ApplicationFiled: September 15, 2011Publication date: January 5, 2012Applicant: PERFORMANCE INDICATOR LLCInventors: Satish Agrawal, Roger Boggs
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Patent number: 8039193Abstract: Provided are methods of applying a tissue marking to a tissue and rendering said tissue marking colorless when desired, comprising implanting into the tissue an amount of the tissue marking in sufficient quantity to form a detectable marking, said tissue marking comprising at least one colored compound comprising a thermally activatable fragmentation group and at least one infrared absorbing compound, wherein the at least one colored compound is capable of being rendered colorless by unimolecular fragmentation of the thermally activatable fragmentation group when the tissue marking is non-imagewise exposed by a source of infrared radiation and applying sufficient infrared radiation to a sufficient amount of the tissue marking to render the tissue marking colorless when desired.Type: GrantFiled: September 13, 2007Date of Patent: October 18, 2011Assignee: Performance Indicator LLCInventors: Satish Agrawal, Roger Boggs
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Patent number: 7842128Abstract: Provided are permanent tissue markings comprising at least one colored compound comprising a thermally activatable fragmentation group and at least one infrared absorbing compound, wherein the at least one colored compound is capable of being rendered colorless by unimolecular fragmentation of the thermally activatable fragmentation group when the tissue marking is non-imagewise exposed by a source of infrared radiation.Type: GrantFiled: September 13, 2007Date of Patent: November 30, 2010Assignee: Performance Indicatior LLCInventors: Satish Agrawal, Roger Boggs
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Publication number: 20090076535Abstract: Provided are methods of applying a tissue marking to a tissue and rendering said tissue marking colorless when desired, comprising implanting into the tissue an amount of the tissue marking in sufficient quantity to form a detectable marking, said tissue marking comprising at least one colored compound comprising a thermally activatable fragmentation group and at least one infrared absorbing compound, wherein the at least one colored compound is capable of being rendered colorless by unimolecular fragmentation of the thermally activatable fragmentation group when the tissue marking is non-imagewise exposed by a source of infrared radiation and applying sufficient infrared radiation to a sufficient amount of the tissue marking to render the tissue marking colorless when desired.Type: ApplicationFiled: September 13, 2007Publication date: March 19, 2009Inventors: Satish Agrawal, Roger Boggs
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Publication number: 20090071365Abstract: Provided are permanent tissue markings comprising at least one colored compound comprising a thermally activatable fragmentation group and at least one infrared absorbing compound, wherein the at least one colored compound is capable of being rendered colorless by unimolecular fragmentation of the thermally activatable fragmentation group when the tissue marking is non-imagewise exposed by a source of infrared radiation.Type: ApplicationFiled: September 13, 2007Publication date: March 19, 2009Inventors: Satish Agrawal, Roger Boggs
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Patent number: 6307085Abstract: A process for generation of acid uses a medium comprising a first acid-generating component capable of generating a first acid, and a secondary acid generator, this secondary acid generator being capable of thermal decomposition to form a secondary acid, the thermal decomposition of the secondary acid generator being catalyzed by the first acid. At least part of the medium is exposed to so as to cause formation of the first acid from the first acid-generating component; and the medium is then heated to cause, in the exposed part of the medium, acid-catalyzed thermal decomposition of the secondary acid generator and formation of the secondary acid.Type: GrantFiled: July 28, 2000Date of Patent: October 23, 2001Assignee: Polaroid CorporationInventors: Jurgen M. Grasshoff, John L. Marshall, Richard A. Minns, Socorro M. Ramos, Stephen G. Stroud, Stephen J. Telfer, Haixin Yang, Roger A. Boggs, Eric S. Kolb
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Patent number: 6242154Abstract: A process for generation of acid uses a medium comprising a first acid-generating component capable of generating a first acid, and a secondary acid generator, this secondary acid generator being capable of thermal decomposition to form a secondary acid, the thermal decomposition of the secondary acid generator being catalyzed by the first acid. At least part of the medium is exposed to so as to cause formation of the first acid from the first acid-generating component; and the medium is then heated to cause, in the exposed part of the medium, acid-catalyzed thermal decomposition of the secondary acid generator and formation of the secondary acid.Type: GrantFiled: December 11, 1998Date of Patent: June 5, 2001Assignee: Polaroid CorporationInventors: Jurgen M. Grasshoff, John L. Marshall, Richard A. Minns, Socorro M. Ramos, Stephen G. Stroud, Stephen J. Telfer, Haixin Yang, Roger A. Boggs, Eric S. Kolb
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Patent number: 6110638Abstract: A process for generation of acid uses a medium comprising a first acid-generating component capable of generating a first acid, and a secondary acid generator, this secondary acid generator being capable of thermal decomposition to form a secondary acid, the thermal decomposition of the secondary acid generator being catalyzed by the first acid. At least part of the medium is exposed to so as to cause formation of the first acid from the first acid-generating component; and the medium is then heated to cause, in the exposed part of the medium, acid-catalyzed thermal decomposition of the secondary acid generator and formation of the secondary acid.Type: GrantFiled: November 27, 1996Date of Patent: August 29, 2000Assignee: Polaroid CorporationInventors: Roger A. Boggs, Jurgen M. Grasshoff, Eric S. Kolb, John L. Marshall, Richard A. Minns, Socorro M. Ramos, Stephen G. Stroud, Stephen J. Telfer, Haixin Yang
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Patent number: 5914213Abstract: A process for generation of acid uses a medium comprising a first acid-generating component capable of generating a first acid, and a secondary acid generator, this secondary acid generator being capable of thermal decomposition to form a secondary acid, the thermal decomposition of the secondary acid generator being catalyzed by the first acid. At least part of the medium is exposed to so as to cause formation of the first acid from the first acid-generating component; and the medium is then heated to cause, in the exposed part of the medium, acid-catalyzed thermal decomposition of the secondary acid generator and formation of the secondary acid.Type: GrantFiled: October 6, 1997Date of Patent: June 22, 1999Assignee: Polaroid CorporationInventors: Jurgen M. Grasshoff, John L. Marshall, Richard A. Minns, Socorro M. Ramos, Stephen G. Stroud, Stephen J. Telfer, Haixin Yang, Roger A. Boggs, Eric S. Kolb
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Patent number: 5667943Abstract: Certain squaric acid derivatives are useful for the thermochemical generation of acid. The squaric acid derivatives may be used in imaging media in conjunction with acid-sensitive materials which undergo a color change when contacted by the acid generated from the squaric acid derivatives. Preferably, the acid-sensitive materials undergo an irreversible color change, so that the image can be fixed by neutralizing all the acid generated with excess base, thereby preventing further color change in the image during long term storage.Type: GrantFiled: April 8, 1996Date of Patent: September 16, 1997Assignee: Polaroid CorporationInventors: Roger A. Boggs, Jurgen M. Grasshoff, Mark R. Mischke, Anthony J. Puttick, Stephen J. Telfer, David P. Waller, Kenneth C. Waterman
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Patent number: 5534393Abstract: Certain squaric acid derivatives are useful for the thermochemical generation of acid. The squaric acid derivatives may be used in imaging media in conjunction with acid-sensitive materials which undergo a color change when contacted by the acid generated from the squaric acid derivatives. Preferably, the acid-sensitive materials undergo an irreversible color change, so that the image can be fixed by neutralizing all the acid generated with excess base, thereby preventing further color change in the image during long term storage.Type: GrantFiled: November 28, 1994Date of Patent: July 9, 1996Assignee: Polaroid CorporationInventors: Roger A. Boggs, Jurgen M. Grasshoff, Mark R. Mischke, Anthony J. Puttick, Stephen J. Telfer, David P. Waller, Kenneth C. Waterman
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Patent number: 5451478Abstract: A slide blank comprises a support at least part of which is essentially transparent; an imageable layer superposed on one face of the support, the imageable layer not being substantially photosensitive but comprising a color-forming composition, which, upon imagewise exposure to actinic radiation, forms a colored material, thereby forming in the imageable layer an image which can be viewed in transmission; and a protective layer superposed on the imageable layer on the opposed side thereof from the support, at least part of the protective layer being essentially transparent; the support, imageable layer and protective layer being secured together to form a slide blank having a thickness of at least about 0.8 mm, and the thickness of the protective layer being such that no part of the imageable layer containing the color-forming composition is more than about 0.2 mm from one external surface of the slide blank. This slide blank can be imaged to produce a ready-mounted slide.Type: GrantFiled: April 12, 1994Date of Patent: September 19, 1995Assignee: Polaroid CorporationInventors: Roger A. Boggs, Yves G. Conturie, Edward P. Lindholm, Warren D. Slafer, Stephen J. Telfer, Michael J. Zuraw
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Patent number: 5424475Abstract: Colorless precursors of preformed image dyes are provided which are useful as the color image-forming materials in thermal imaging systems. These colorless precursors possess at least one thermal protecting group that undergoes fragmentation upon heating and at least one leaving group that undergoes irreversible elimination upon heating, said protecting and leaving groups maintaining the precursor in its colorless form until heat is applied to effect removal of these groups whereby the precursor is converted to an image dye.Type: GrantFiled: July 12, 1991Date of Patent: June 13, 1995Assignee: Polaroid CorporationInventors: Roger A. Boggs, Alan L. Borror, Patrick R. Conlon, Richard L. Cournoyer, Ernest W. Ellis, David P. Waller
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Patent number: 5422230Abstract: A slide blank comprises a support; a mask layer having a substantially transparent central portion and a non-transparent peripheral portion surrounding the central portion; and an imageable layer which is not substantially photosensitive but is imageable to form an image which can be viewed in transmission. The support, mask layer and imageable layer are secured together so that the support and the imageable layer extend across essentially the entire transparent central portion of the mask layer, at least the portion of the support adjacent the central portion of the mask layer being substantially transparent. This slide blank can be imaged to produce a ready-mounted slide.Type: GrantFiled: April 12, 1994Date of Patent: June 6, 1995Assignee: Polaroid CorporationInventors: Roger A. Boggs, Warren D. Slafer, Stephen J. Telfer, Michael J. Zuraw
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Patent number: 5401619Abstract: Certain squaric acid derivatives are useful for the thermochemical generation of acid. The squaric acid derivatives may be used in imaging media in conjunction with acid-sensitive materials which undergo a color change when contacted by the acid generated from the squaric acid derivatives. Preferably, the acid-sensitive materials undergo an irreversible color change, so that the image can be fixed by neutralizing all the acid generated with excess base, thereby preventing further color change in the image during long term storage.Type: GrantFiled: August 13, 1993Date of Patent: March 28, 1995Assignee: Polaroid CorporationInventors: Roger A. Boggs, Jurgen M. Grasshoff, Mark R. Mischke, Anthony J. Puttick, Stephen J. Telfer, David P. Waller, Kenneth C. Waterman
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Patent number: 5350870Abstract: Leuco dyes are provided which comprise the coupling product of a N-acyl substituted aromatic amino color developer and a dye-forming coupler moiety substituted at the coupling carbon with a thermally removable leaving group. Thermal imaging systems employing these leuco dyes have the advantage of reduced bubble formation relative to thermal imaging systems employing prior art leuco dyes containing a group which thermally fragments into one or more gases.Type: GrantFiled: April 12, 1993Date of Patent: September 27, 1994Assignee: Polaroid CorporationInventors: Roger A. Boggs, Richard L. Cournoyer, Ernest W. Ellis, Sandra E. Russo-Rodriguez, Stephen J. Telfer, David P. Waller, Michael J. Zuraw
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Patent number: 5278031Abstract: Certain squaric acid derivatives are useful for the thermochemical generation of acid. The squaric acid derivatives may be used in imaging media in conjunction with acid-sensitive materials which undergo a color change when contacted by the acid generated from the squaric acid derivatives. Preferably, the acid-sensitive materials undergo an irreversible color change, so that the image can be fixed by neutralizing all the acid generated with excess base, thereby preventing further color change in the image during long term storage.Type: GrantFiled: October 23, 1992Date of Patent: January 11, 1994Assignee: Polaroid CorporationInventors: Roger A. Boggs, Jurgen M. Grasshoff, Mark R. Mischke, Anthony J. Puttick, Stephen J. Telfer, David P. Waller, Kenneth C. Waterman
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Patent number: 5236884Abstract: Leuco dyes are provided which comprise the coupling product of a N-acyl substituted aromatic amino color developer and a dye-forming coupler moiety substituted at the coupling carbon with a thermally removable leaving group. Thermal imaging systems employing these leuco dyes have the advantage of reduced bubble formation relative to thermal imaging systems employing prior art leuco dyes containing a group which thermally fragments into one or more gases.Type: GrantFiled: May 6, 1991Date of Patent: August 17, 1993Assignee: Polaroid CorporationInventors: Roger A. Boggs, Richard L. Cournoyer, Ernest W. Ellis, Sandra E. Russo-Rodriguez, Stephen J. Telfer, David P. Waller, Michael J. Zuraw
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Patent number: 5192645Abstract: A thermal imaging method for forming color images is provided which employs as the color image-forming material, a colorless precursor of a preformed image dye possessing at least one thermal protecting group that undergoes fragmentation upon heating and at least one leaving group that undergoes irreversible elimination upon heating, said protecting and leaving groups maintaining the precursor in its colorless form until heat is applied to effect removal of these groups whereby the precursor is converted to an image dye.Type: GrantFiled: July 12, 1991Date of Patent: March 9, 1993Assignee: Polaroid CorporationInventors: Roger A. Boggs, Alan L. Borror, Patrick R. Conlon, Richard L. Cournoyer, Ernest W. Ellis, David P. Waller