Patents by Inventor R. Ellen Harelstad

R. Ellen Harelstad 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).

  • Method of making printable forms comprising stickers and articles
    Patent number: 6869654
    Abstract: The invention discloses form constructions and methods of making form constructions comprising a substrate having a printable surface portion and a sticker. In preferred embodiment the sticker is a face adhering validation sticker and/or the form substrate comprises a cutout with the viewing surface of the sticker releasably attached to the perimeter of the cutout and exposed through the cutout.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: March 22, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Scott T. Ginkel, R. Ellen Harelstad, Sundar J. Rajan
  • Articles containing thioxanthone dyes
    Patent number: 6841236
    Abstract: Described are articles, laminates, sheets, coatings, retroreflective articles, pigments containing thioxanthone compounds that are fluorescent colorants.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: January 11, 2005
    Assignee: 3M Innovative Properties Co.
    Inventors: Lee A. Pavelka, David B. Olson, R. Ellen Harelstad, David M. Burns
  • Method of making printable forms comprising stickers and articles
    Publication number: 20040091657
    Abstract: The invention discloses form constructions and methods of making form constructions comprising a substrate having a printable surface portion and a sticker. In preferred embodiment the sticker is a face adhering validation sticker and/or the form substrate comprises a cutout with the viewing surface of the sticker releasably attached to the perimeter of the cutout and exposed through the cutout.
    Type: Application
    Filed: November 13, 2002
    Publication date: May 13, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Scott T. Ginkel, R. Ellen Harelstad, Sundar J. Rajan
  • Method of making printable forms comprising stickers and articles
    Publication number: 20040091658
    Abstract: The invention discloses form constructions such and self-seal mailer and methods of making form constructions comprising a substrate having a printable surface portion and a sticker. In preferred embodiments the sticker is a face adhering validation sticker and/or the form substrate comprises a cutout with the viewing surface of the sticker releasably attached to the perimeter of the cutout and exposed through the cutout.
    Type: Application
    Filed: August 5, 2003
    Publication date: May 13, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Scott T. Ginkel, R. Ellen Harelstad, Sundar J. Rajan
  • Durable fluorescent organic pigments and methods of making
    Publication number: 20030102460
    Abstract: Daylight fluorescent articles are disclosed that utilize durable fluorescent pigment particles resulting from a fluorescent dye incorporated within a matrix polymer selected from polycarbonate, polyester and mixtures thereof and where the particles are of various desired shapes and sizes. Embodiments of such fluorescent pigment particles may also be retroreflective and are especially useful for pavement marking surfaces and retroreflective products for highway transportation safety.
    Type: Application
    Filed: January 8, 2003
    Publication date: June 5, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: R. Ellen Harelstad, David M. Burns, Lee A. Pavelka
  • Articles containing thioxanthone dyes
    Publication number: 20030077451
    Abstract: Described are articles, laminates, sheets, coatings, retroreflective articles, pigments containing thioxanthone compounds that are fluorescent colorants.
    Type: Application
    Filed: August 20, 2001
    Publication date: April 24, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Lee A. Pavelka, David B. Olson, R. Ellen Harelstad, David M. Burns
  • Durable fluorescent organic pigments and methods of making
    Patent number: 6533961
    Abstract: Daylight fluorescent articles are disclosed that utilize durable fluorescent pigment particles resulting from a fluorescent dye incorporated within a matrix polymer selected from polycarbonate, polyester and mixtures thereof and where the particles are of various desired shapes and sizes. Embodiments of such fluorescent pigment particles may also be retroreflective and are especially useful for pavement marking surfaces and retroreflective products for highway transportation safety.
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: March 18, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: R. Ellen Harelstad, David M. Burns, Lee A. Pavelka
  • Durable fluorescent organic pigments and methods of making
    Publication number: 20020002929
    Abstract: Daylight fluorescent articles are disclosed that utilize durable fluorescent pigment particles resulting from a fluorescent dye incorporated within a matrix polymer selected from polycarbonate, polyester and mixtures thereof and where the particles are of various desired shapes and sizes. Embodiments of such fluorescent pigment particles may also be retroreflective and are especially useful for pavement marking surfaces and retroreflective products for highway transportation safety.
    Type: Application
    Filed: February 12, 2001
    Publication date: January 10, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: R. Ellen Harelstad, David M. Burns, Lee A. Pavelka