The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 2009
Filed:
Sep. 11, 2006
Zhiqun Zhang, Roseville, MN (US);
Janet A. Venne, Roseville, MN (US);
Dennis L. Becker, Vadnais Heights, MN (US);
Lori-ann S. Prioleau, St. Paul, MN (US);
Zhiqun Zhang, Roseville, MN (US);
Janet A. Venne, Roseville, MN (US);
Dennis L. Becker, Vadnais Heights, MN (US);
Lori-Ann S. Prioleau, St. Paul, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
There is provided a hook fastener comprising a base, where at least one surface has a multiplicity of engaging projections, which projections have a top surface and an attached end that are arranged in a region to form one or more shapes. There is also provided a method for forming the above fastener comprising dispersing onto a contact release surface polymer particles in at least one discrete area forming a predetermined shape and forming preform projections. The front surface of the base is fixed to the terminal ends of at least some of the preform projections and then removed from the contact release surface in the form of the predetermined shape. In an alternative method polymer particles are uniformly dispersed onto a contact release surface using electrostatic attraction and selectively transferred to the base in the predetermined shape by masks or selective adhesion or the like.