Patents by Inventor Howard R. Tolliver

Howard R. Tolliver 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).

  • Publication number: 20030123931
    Abstract: A method of making a pavement marker including the steps of forming an array of pavement elements in a predefined pattern interconnected by a carrier web. A frangible connection is formed between a plurality of the pavement elements and the carrier web. After the array of pavement elements is applied to the pavement surface using an adhesive, a portion of the carrier web surrounding the pavement elements is removed or allowed to substantially deteriorate and dissipate, leaving an array of discrete pavement elements.
    Type: Application
    Filed: December 31, 2001
    Publication date: July 3, 2003
    Inventors: Sithya S. Khieu, Howard R. Tolliver, Thomas R. Borden
  • Publication number: 20030123930
    Abstract: A method for making a magnetic pavement marker having an array of magnetic pavement elements arranged in a predefined pattern interconnected by a carrier web. After the array of magnetic pavement elements is applied to the pavement surface, the portion of the carrier web surrounding the magnetic pavement elements is removed or allowed to substantially deteriorate and dissipate, leaving an array of discrete, magnetic pavement elements.
    Type: Application
    Filed: December 31, 2001
    Publication date: July 3, 2003
    Inventors: Gregory F. Jacobs, Robert L. Keech, Sithya S. Khieu, Howard R. Tolliver, Thomas R. Borden
  • Patent number: 6217252
    Abstract: Flame-spray transportation surface marking method employing a binder material selected from the group consisting of acrylic polymers and copolymers, olefin polymers and copolymers having a number average molecular weight greater than about 10,000, urethane polymers and copolymers, curable epoxy resins, ester polymers and copolymers, and blends thereof, together with a particulate topcoat or particulate filler selected from the group consisting of reflective elements, skid-resistant particles, magnetizable particles, and mixtures thereof, wherein the binder adheres directly to the transportation surface.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: April 17, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Howard R. Tolliver, Suman K. Patel, Thomas V. Kusilek, Nagraj Koneripalli
  • Patent number: 5491021
    Abstract: A truck trailer cover 40 includes a multi-layered article 10 that is dimensioned and adapted to be fitted over and secured to a truck trailer 42. The multi-layered article, 10 includes a fabric 12 having a polymeric sheet 14, 16 secured to each side of the fabric 12. Each polymeric sheet 14, 16 secured to the fabric 12 has two non-chlorinated polymeric layers. The first non-chlorinated polymeric layer A, A' is disposed on the inner side of each sheet and contains an ethylene copolymer that has a Shore A hardness less than 85. The second non-chlorinated polymeric layer B, B' is disposed on the outer side of each sheet and contains a polymer having a Shore A hardness greater than 85. The multi-layered article 10 demonstrates good flex-crack resistance to make it suitable for use in a roll-up sign 30 or a truck trailer cover 40.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: February 13, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Howard R. Tolliver, Terry R. Bailey
  • Patent number: 5480705
    Abstract: A multi-layered article 10 includes a fabric 12 having a polymeric sheet 14, 16 secured to each side of the fabric 12. Each polymeric sheet 14, 16 secured to the fabric 12 has two non-chlorinated polymeric layers. The first non-chlorinated polymeric layer A, A' is disposed on the inner side of each sheet and contains an ethylene copolymer that has a Shore A hardness less than 85. The second non-chlorinated polymeric layer B, B' is disposed on the outer side of each sheet and contains a polymer having a Shore A hardness greater than 85. The multi-layered article 10 demonstrates good flex-crack resistance to make it suitable for use in a roll-up sign 30 or a truck trailer cover 40.
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: January 2, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Howard R. Tolliver, Terry R. Bailey
  • Patent number: 5069964
    Abstract: A retroreflective sheeting comprising a substantially transparent face member, an encapsulating member having a front and a back side, the front side of the encapsulating member being sealed by a network of interconnecting bonds to the face member, and retroreflective elements disposed between the face member and the encapsulating member in substantially a monolayer with an air-interface. The encapsulating member comprises a plasticizer-resistant barrier layer which prevents migration of plasticizer therethrough, thereby protecting the aforementioned elements of the sheeting therefrom.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: December 3, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Howard R. Tolliver, Terry R. Bailey, David L. Bergeson
  • Patent number: 5066098
    Abstract: Cellular, encapsulated-lens retroreflective sheeting comprising: (1) a base sheet of a monolayer of retroreflective elements partially embedded in a binder layer which typically is white or comprises a whitening agent; (2) a cover sheet disposed in spaced relation from the layer of retroreflective elements; and (3) a network of narrow intersecting bonds or seal legs that extend between the cover sheet and the base sheet and comprise binder material thermoformed at the point of contact between the base sheet and cover sheet so as to adhere the base sheet and the cover sheet together and form a plurality of cells within which retroreflective elements are hermetically sealed; wherein the cover sheet comprises an inner layer and at least a structural layer, the structural layer being adhered to the outside surface of the inner layer.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: November 19, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Roger R. Kult, Terry R. Bailey, Howard R. Tolliver
  • Patent number: 5064272
    Abstract: In encapsulated-lens reflective sheeting of the prior art, a monolayer of glass microspheres is embedded in a binder layer, a specularly reflective layer underlies the microspheres, and a cover film encapsulates the microspheres, within a plurality of hermetically sealed cells. In the invention, a HMW thermoplastic binder film, affords improved structural intregity, greater toughness, and better conformability to irregular surfaces without cracking. The cover film preferably is of the same polymer family as said binder film.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: November 12, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Terry R. Bailey, Roger R. Kult, Howard R. Tolliver, Arthur D. Dickson
  • Patent number: 4983436
    Abstract: A retroreflective sheeting having incorporated therein an optically-nonfunctional backing film. The backing film comprises at least a self-adherent layer which is adhered directly to the rear side of the specularly reflecting layer of the sheeting and, may further comprise one or more layers, such as a reinforcing layer, on the rear side of the self-adherent layer. The physical properties of the backing film, e.g., tensile strength, tear resistance, elongation, or adhesive compatibility are selected according to the properties desired of the resultant retroreflective sheeting. The self-adherent layer may comprise: polyethylene; or one or more copolymers comprising by weight a major portion of at least one of ethylene or propylene, and a minor portion of a polar comonomer; or a blend comprising (a) one or more other polymers and (b) one or more of such copolymers or polyethylene or combinations of such copolymers and polyethylene, the blend comprising a major portion by weight of ethylene and/or propylene.
    Type: Grant
    Filed: April 15, 1987
    Date of Patent: January 8, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Terry R. Bailey, Howard R. Tolliver, Douglas C. Degler, Dennis J. Chirhart
  • Patent number: 4897136
    Abstract: In encapsulated-lens reflective sheeting of the prior art, a monolayer of glass microspheres is embedded in a binder layer, a specularly reflective layer underlies the microspheres, and a cover film encapsulates the microspheres, within a plurality of hermetically sealed cells. In the invention, a HMW thermoplastic binder film, affords improved structural integrity, greater toughness, and better conformability to irregular surfaces without cracking. The cover film preferably is of the same polymer family as said binder film.
    Type: Grant
    Filed: August 26, 1987
    Date of Patent: January 30, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Terry R. Bailey, Roger R. Kult, Howard R. Tolliver, Arthur D. Dickson
  • Patent number: 4896943
    Abstract: An encapsulated-lens retroreflective sheeting comprising a monolayer of lenses partially embedded in a binder layer, a specularly reflective layer underlying the lenses, and a cover film sealed to the binder layer along a network of interconnecting lines forming hermetically sealed cells within which the lenses are encapsulated and have an air interface, wherein the cover film comprises polyethylene, or polypropylene, or a copolymer comprising a major portion by weight of at least one of ethylene or propylene and a minor portion by weight of a comonomer. Such a cover film affords high flexibility, improved impact resistance, resistance to moisture absorption, and greater toughness to the retroreflective sheeting. In some embodiments the cover film is multi-layer.
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: January 30, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Howard R. Tolliver, Roger R. Kult, Terry R. Bailey, Arthur D. Dickson