Patents by Inventor Raymond E. Grunzinger

Raymond E. Grunzinger 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).

  • Use of a crystalline bead bond layer in a retroreflective article
    Patent number: 6156436
    Abstract: Retroreflective sheeting articles 10 that have a retroreflective bead bond layer 15 that contains a polymer that contains linear crystalline segments and that is incorporated into a crosslinked polymeric network.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: December 5, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: William D. Joseph, Lee A. Pavelka, Raymond E. Grunzinger
  • Embossable sign construction
    Patent number: 5262225
    Abstract: A curable polymer composition for use in providing a dimensionally stable coating comprises a semi-interpenetrating polymer network. The semi-interpenetrating polymer network includes a reactive polymer component, cross-linking agent, and non-reactive polymer component. The non-reactive polymer component has a molecular weight of about 7,000-30,000, and preferably about 15,000. In preferred embodiments, the reactive polymer has a molecular weight of about 30,000-200,000, and preferably about 40,000-60,000. Spacecoat compositions made with formulations described, exhibit good long-term stability, and resistance to failure upon embossing of a substrate to which the retroreflective sheeting is applied.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: November 16, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Bruce B. Wilson, Raymond E. Grunzinger
  • Polymer composition for use as flexible dimensionally stable coating; and method
    Patent number: 5256721
    Abstract: A curable polymer composition for use in providing a dimensionally stable coating comprises a semi-interpenetrating polymer network. The semi-interpenetrating polymer network includes a reactive polymer component, cross-linking agent, and non-reactive polymer component. The non-reactive polymer component has a molecular weight of about 7,000-30,000, and preferably about 15,000. In preferred embodiments, the reactive polymer has a molecular weight of about 30,000-200,000, and preferably about 40,000-60,000. Spacecoat compositions made with formulations described, exhibit good long-term stability, and resistance to failure upon embossing of a substrate to which the retroreflective sheeting is applied.
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: October 26, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Bruce B. Wilson, Raymond E. Grunzinger
  • Polymer composition for use as flexible, dimensionally stable coating; and method
    Patent number: 5196474
    Abstract: A curable polymer composition for use in providing a dimensionally stable coating comprises a semi-interpenetrating polymer network. The semi-interpenetrating polymer network includes a reactive polymer component, cross-linking agent, and non-reactive polymer component. The non-reactive polymer component has a molecular weight of about 7,000-30,000, and preferably about 15,000. In preferred embodiments, the reactive polymer has a molecular weight of about 30,000-200,000, and preferably about 40,000-60,000. Spacecoat compositions made with formulations described, exhibit good long-term stability, and resistance to failure upon embossing of a substrate to which the retroreflective sheeting is applied.
    Type: Grant
    Filed: January 11, 1991
    Date of Patent: March 23, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Bruce B. Wilson, Raymond E. Grunzinger
  • Embedded lens retroreflective sheeting with flexible, dimensionally stable coating
    Patent number: 5008142
    Abstract: A curable polymer composition for use in providing a dimensionally stable coating comprises a semi-interpenetrating polymer network. The semi-interpenetrating polymer network includes a reactive polymer component, cross-linking agent, and non-reactive polymer component. The non-reactive polymer component has a molecular weight of about 7,000-30,000, and preferably about 15,000. In preferred embodiments, the reactive polymer has a molecular weight of about 30,000-200,000, and preferably about 40,000-60,000. Spacecoat compositions made with formulations described, exhibit good long-term stability, and resistance to failure upon embossing of a substrate to which the retroreflective sheeting is applied.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: April 16, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Bruce B. Wilson, Raymond E. Grunzinger
  • Flat transparent top coat for retroreflective sheeting
    Patent number: 4808471
    Abstract: The novel retroreflective sheeting has a flat transparent top coat which is as tough and as resistant to solvents and abrasion as are alkyd resins, and as weather resistant as are acrylic polyesters. That top coat is made from a mixture of hydroxy-functional acrylic polyol and a curing agent which is an aliphatic polyfunctional isocyanate such as the biuret of 1,6-hexamethylene diisocyanate. The retroreflective sheeting may have a dual-layer top coat, the outer layer being relatively hard to provide good resistance to solvents, abrasion and weathering, and the inner layer being softer to make the sheeting more conformable.
    Type: Grant
    Filed: January 4, 1988
    Date of Patent: February 28, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Raymond E. Grunzinger