Patents by Inventor Raymond C. Chiu

Raymond C. Chiu 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).

  • Retroreflective articles including optically active areas and optically inactive areas
    Patent number: 10859738
    Abstract: This disclosure generally relates to retroreflective articles and methods of making such articles.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: December 8, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Michael Benton Free, Mieczyslaw H. Mazurek, Bimal V. Thakkar, Kenneth L. Smith, Suman K. Patel, William D. Coggio, Mikhail L. Pekurovsky, Raymond C. Chiu
  • Retroreflective articles including optically active areas and optically inactive areas
    Patent number: 10557976
    Abstract: This disclosure generally relates to retroreflective articles and methods of making such articles.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: February 11, 2020
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kenneth L. Smith, Michael Benton Free, Bimal V. Thakkar, Raymond C. Chiu
  • RETROREFLECTIVE ARTICLES INCLUDING OPTICALLY ACTIVE AREAS AND OPTICALLY INACTIVE AREAS
    Publication number: 20190086590
    Abstract: This disclosure generally relates to retroreflective articles and methods of making such articles.
    Type: Application
    Filed: November 16, 2018
    Publication date: March 21, 2019
    Inventors: Kenneth L. Smith, Michael Benton Free, Bimal V. Thakkar, Raymond C. Chiu
  • Retroreflective articles including optically active areas and optically inactive areas
    Patent number: 10132969
    Abstract: This disclosure generally relates to retroreflective articles and methods of making such articles.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: November 20, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kenneth L. Smith, Michael Benton Free, Bimal V. Thakkar, Raymond C. Chiu
  • RETROREFLECTIVE ARTICLES INCLUDING OPTICALLY ACTIVE AREAS AND OPTICALLY INACTIVE AREAS
    Publication number: 20180003868
    Abstract: This disclosure generally relates to retroreflective articles and methods of making such articles.
    Type: Application
    Filed: September 14, 2017
    Publication date: January 4, 2018
    Inventors: MICHAEL BENTON FREE, MIECZYSLAW H. MAZUREK, BIMAL V. THAKKAR, KENNETH L. SMITH, SUMAN K. PATEL, WILLIAM D. COGGIO, MIKHAIL L. PEKUROVSKY, RAYMOND C. CHIU
  • Retroreflective articles including optically active areas and optically inactive areas
    Patent number: 9791604
    Abstract: This disclosure generally relates to retroreflective articles and methods of making such articles.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: October 17, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Michael Benton Free, Mieczyslaw H. Mazurek, Bimal V. Thakkar, Kenneth L. Smith, Suman K. Patel, William D. Coggio, Mikhail L. Pekurovsky, Raymond C. Chiu
  • RETROREFLECTIVE ARTICLES INCLUDING OPTICALLY ACTIVE AREAS AND OPTICALLY INACTIVE AREAS
    Publication number: 20170184763
    Abstract: This disclosure generally relates to retroreflective articles and methods of making such articles.
    Type: Application
    Filed: March 14, 2017
    Publication date: June 29, 2017
    Inventors: Kenneth L. Smith, Michael Benton Free, Bimal V. Thakkar, Raymond C. Chiu
  • Retroreflective articles including optically active areas and optically inactive areas
    Patent number: 9618663
    Abstract: This disclosure generally relates to retroreflective articles and methods of making such articles.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: April 11, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kenneth L. Smith, Michael Benton Free, Bimal V. Thakkar, Raymond C. Chiu
  • RETROREFLECTIVE ARTICLES INCLUDING OPTICALLY ACTIVE AREAS AND OPTICALLY INACTIVE AREAS
    Publication number: 20130135731
    Abstract: This disclosure generally relates to retroreflective articles and methods of making such articles.
    Type: Application
    Filed: April 15, 2010
    Publication date: May 30, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Kenneth L. Smith, Michael Benton Free, Bimal V. Thakkar, Raymond C. Chiu
  • RETROREFLECTIVE ARTICLES INCLUDING OPTICALLY ACTIVE AREAS AND OPTICALLY INACTIVE AREAS
    Publication number: 20130114142
    Abstract: This disclosure generally relates to retroreflective articles and methods of making such articles.
    Type: Application
    Filed: April 15, 2010
    Publication date: May 9, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Michael Benton Free, Mieczyslaw H. Mazurek, Bimal V. Thakkar, Kenneth L. Smith, Suman K. Patel, William D. Coggio, Mikhail L. Pekurovsky, Raymond C. Chiu
  • Microring resonator and method for manufacturing
    Patent number: 7062118
    Abstract: A method for making a plurality of waveguide resonator devices is disclosed herein. The method includes fixing a precursor resonator structure relative to a plurality of waveguides. The method also includes dividing the precursor resonator structure into a plurality of separate resonators after the precursor resonator structure has been fixed relative to the waveguides. The precursor resonator structure is divided at locations between the waveguides.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: June 13, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Raymond C. Chiu, John E. Potts
  • Method for precise molding and alignment of structures on a substrate using a stretchable mold
    Patent number: 6984935
    Abstract: A method for molding and aligning microstructures on a patterned substrate using a microstructured mold. A slurry containing a mixture of a ceramic powder and a curable fugitive binder is placed between the microstructure of a stretchable mold and a patterned substrate. The mold can be stretched to align the microstructure of the mold with a predetermined portion of the patterned substrate. The slurry is hardened between the mold and the substrate. The mold is then removed to leave microstructures adhered to the substrate and aligned with the pattern of the substrate. The microstructures can be thermally heated to remove the binder and optimally fired to sinter the ceramic powder.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: January 10, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Raymond C. Chiu, Timothy Lee Hoopman, Paul Edward Humpal, Vincent Wen-Shiuan King, Kenneth R. Dillon
  • Method for precise molding and alignment of structures on a substrate using a stretchable mold
    Patent number: 6802754
    Abstract: A method for molding and aligning microstructures on a patterned substrate using a microstructured mold. A slurry containing a mixture of a ceramic powder and a curable fugitive binder is placed between the microstructure of a stretchable mold and a patterned substrate. The mold can be stretched to align the microstructure of the mold with a predetermined portion of the patterned substrate. The slurry is hardened between the mold and the substrate. The mold is then removed to leave microstructures adhered to the substrate and aligned with the pattern of the substrate. The microstructures can be thermally heated to remove the binder and optimally fired to sinter the ceramic powder.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: October 12, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Raymond C. Chiu, Timothy Lee Hoopman, Paul Edward Humpal, Vincent Wen-Shiuan King, Kenneth R. Dillon
  • Curable slurry for forming ceramic microstructures on a substrate using a mold
    Patent number: 6713526
    Abstract: A curable slurry for forming ceramic microstructures on a substrate using a mold. The slurry is a mixture of a ceramic powder, a fugitive binder, and a diluent. The ceramic powder has a low softening temperature in a range of about 400° C. to 600° C. and a coefficient of thermal expansion closely matched to that of the substrate. The fugitive binder is capable of radiation curing, electron beam curing, or thermal curing. The diluent promotes release properties with the mold after curing the binder or quick and complete burn out of the binder during debinding.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: March 30, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Kenneth R. Dillon, Kyung H. Moh, Thomas Edward Wood, Raymond C. Chiu, Vincent Wen-Shiuan King, Richard P. Rusin
  • Method for precise molding and alignment of structures on a substrate using a stretchable mold
    Publication number: 20040058614
    Abstract: A method for molding and aligning microstructures on a patterned substrate using a microstructured mold. A slurry containing a mixture of a ceramic powder and a curable fugitive binder is placed between the microstructure of a stretchable mold and a patterned substrate. The mold can be stretched to align the microstructure of the mold with a predetermined portion of the patterned substrate. The slurry is hardened between the mold and the substrate. The mold is then removed to leave microstructures adhered to the substrate and aligned with the pattern of the substrate. The microstructures can be thermally heated to remove the binder and optimally fired to sinter the ceramic powder.
    Type: Application
    Filed: July 24, 2003
    Publication date: March 25, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Raymond C. Chiu, Timothy Lee Hoopman, Paul Edward Humpal, Vincent Wen-Shiuan King, Kenneth R. Dillon
  • Method for precise molding and alignment of structures on a substrate using a stretchable mold
    Patent number: 6616887
    Abstract: A method for molding and aligning microstructures on a patterned substrate using a microstructured mold. A slurry containing a mixture of a ceramic powder and a curable fugitive binder is placed between the microstructure of a stretchable mold and a patterned substrate. The mold can be stretched to align the microstructure of the mold with a predetermined portion of the patterned substrate. The slurry is hardened between the mold and the substrate. The mold is then removed to leave microstructures adhered to the substrate and aligned with the pattern of the substrate. The microstructures can be thermally heated to remove the binder and optimally fired to sinter the ceramic powder.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: September 9, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Raymond C. Chiu, Timothy Lee Hoopman, Paul Edward Humpal, Vincent Wen-Shiuan King, Kenneth R. Dillon
  • Curable slurry for forming ceramic microstructures on a substrate using a mold
    Publication number: 20020102411
    Abstract: A curable slurry for forming ceramic microstructures on a substrate using a mold. The slurry is a mixture of a ceramic powder, a fugitive binder, and a diluent. The ceramic powder has a low softening temperature in a range of about 400° C. to 600° C. and a coefficient of thermal expansion closely matched to that of the substrate. The fugitive binder is capable of radiation curing, electron beam curing, or thermal curing. The diluent promotes release properties with the mold after curing the binder or quick and complete burn out of the binder during debinding.
    Type: Application
    Filed: January 24, 2002
    Publication date: August 1, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Kenneth R. Dillon, Kyung H. Moh, Thomas Edward Wood, Raymond C. Chiu, Vincent Wen-Shiuan King, Richard P. Rusin
  • Light control device
    Patent number: 6398370
    Abstract: A light control device is disclosed that includes a two film construction, each film having a plurality of light absorbing regions. For example, the light absorbing elements can be a series of grooves or column-like indentations in the films that are filled or coated with a light absorbing material. The two films can be adjacently disposed so that their respective light absorbing regions form a plurality of light absorbing elements that extend along the thickness direction of the device. The light absorbing elements allow a viewer to view an image through the light control device within a range of viewing angles while blocking a view of the image outside that range of viewing angles. The two film construction allows for relative ease of manufacture as well as the ability to form light absorbing elements that can provide better viewing uniformity throughout a typical viewing range, a sharp privacy viewing cut off, and reduced ghost image formation.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: June 4, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Raymond C. Chiu, Gary E. Gaides, Paul E. Humpal, Koichi Sano
  • Method for precise molding and alignment of structures on a substrate using a stretchable mold
    Publication number: 20020038916
    Abstract: A method for molding and aligning microstructures on a patterned substrate using a microstructured mold. A slurry containing a mixture of a ceramic powder and a curable fugitive binder is placed between the microstructure of a stretchable mold and a patterned substrate. The mold can be stretched to align the microstructure of the mold with a predetermined portion of the patterned substrate. The slurry is hardened between the mold and the substrate. The mold is then removed to leave microstructures adhered to the substrate and aligned with the pattern of the substrate. The microstructures can be thermally heated to remove the binder and optimally fired to sinter the ceramic powder.
    Type: Application
    Filed: October 5, 2001
    Publication date: April 4, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Raymond C. Chiu, Timothy Lee Hoopman, Paul Edward Humpal, Vincent Wen-Shiuan King, Kenneth R. Dillon
  • Curable slurry for forming ceramic microstructures on a substrate using a mold
    Patent number: RE40967
    Abstract: A curable slurry for forming ceramic microstructures on a substrate using a mold. The slurry is a mixture of a ceramic powder, a fugitive binder, and a diluent. The ceramic powder has a low softening temperature in a range of about 400° C. to 600° C. and a coefficient of thermal expansion closely matched to that of the substrate. The fugitive binder is capable of radiation curing, electron beam curing, or thermal curing. The diluent promotes release properties with the mold after curing the binder or quick and complete burn out of the binder during debinding.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: November 10, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: Kenneth R. Dillon, Kyung H. Moh, Thomas E. Wood, Raymond C. Chiu, Vincent W. King, Richard P. Rusin