1
Stephen J Chudzik, Aron B Anderson, Ralph A Chappa, Timothy M Kloke: Bioactive agent release coating. Surmodics, Fredrikson & Byron P A, April 10, 2001: US06214901 (290 worldwide citation)

A coating composition for use in coating implantable medical devices to improve their ability to release bioactive agents in vivo. The coating composition is particularly adapted for use with devices that undergo significant flexion and/or expansion in the course of their delivery and/or use, such a ...


2
Stephen J Chudzik, Aron B Anderson, Ralph A Chappa, Timothy M Kloke: Bioactive agent release coating. Surmodics, Fredrikson & Byron P A, February 5, 2002: US06344035 (265 worldwide citation)

A coating composition for use in coating implantable medical devices to improve their ability to release bioactive agents in vivo. The coating composition is particularly adapted for use with devices that undergo significant flexion and/or expansion in the course of their delivery and/or use, such a ...


3
Ralph A Chappa, Sheau Ping Hu, Dale G Swan, Melvin J Swanson, Patrick E Guire: Target molecule attachment to surfaces. Surmodics, Merchant & Gould P C, October 15, 2002: US06465178 (143 worldwide citation)

Method and reagent composition for covalent attachment of target molecules, such as nucleic acids, onto the surface of a substrate. The reagent composition includes groups capable of covalently binding to the target molecule. Optionally, the composition can contain photoreactive groups for use in at ...


4
Stephen J Chudzik, Aron B Anderson, Ralph A Chappa, Timothy M Kloke: Bioactive agent release coating. SurModics, Fredrikson & Byron P A, March 7, 2006: US07008667 (102 worldwide citation)

A coating composition for use in coating implantable medical devices to improve their ability to release bioactive agents in vivo. The coating composition is particularly adapted for use with devices that undergo significant flexion and/or expansion in the course of their delivery and/or use, such a ...


5
Stephen J Chudzik, Aron B Anderson, Ralph A Chappa, Timothy M Kloke: Bioactive agent release coating. SurModics, Fredrikson & Byron P A, May 10, 2005: US06890583 (98 worldwide citation)

A coating composition for use in coating implantable medical devices to improve their ability to release bioactive agents in vivo. The coating composition is particularly adapted for use with devices that undergo significant flexion and/or expansion in the course of their delivery and/or use, such a ...


6
Aron B Anderson, Ralph A Chappa, Terrence P Everson: Coating compositions. SurModics, Fredrikson & Byron P A, July 3, 2001: US06254634 (93 worldwide citation)

An article (e.g., in the form of an implantable medical article) in the form of a support material bearing an intermediate layer consisting of a functional silicone polymer formulation, the intermediate layer having photoimmobilized thereon a target compound. In another aspect, a method of fabricati ...


7
Ralph A Chappa, Steven J Porter: Coating apparatus and method. Surmodics, Merchant & Gould P C, May 13, 2003: US06562136 (78 worldwide citation)

The invention provides a device for holding a substrate during deposition processes that includes a rotation member rotatable about a first, central axis, and a plurality of substrate holders positioned on the rotation member, the substrate holders being rotatable about second axes. In another aspec ...


8
Ralph A Chappa, Sean M Stucke, Richard A Amos, Terrence P Everson, Stephen J Chudzik, Dale G Swan, Peter H Duquette: Reagent and method for providing coatings on surfaces. SurModics, Fredrikson & Byron P A, March 25, 2008: US07348055 (39 worldwide citation)

A grafting reagent and related method of using the reagent to form a polymeric layer on a support surface, and particularly a porous support surface, in a manner that provides and/or preserves desired properties (such as porosity) of the surface. The reagent and method can be used to provide a thin, ...


9
Dale G Swan, Richard A Amos, Terrence P Everson, Stephen J Chudzik, Ralph A Chappa, Sean M Stucke, Peter H Duquette: Water-soluble coating agents bearing initiator groups. SurModics, Fredrikson & Byron P A, December 30, 2003: US06669994 (29 worldwide citation)

A method of forming a polymer layer on a support surface by the use of a coating agent and polymerizable compounds. The coating agent provides photoreactive groups adapted to attach the agent to the surface, as well as photoreactive groups adapted to remain unattached to the surface, and thus serve ...


10
Ralph A Chappa: Method and apparatus for coating of substrates. SurModics, Pauly DeVries Smith & Deffner, October 24, 2006: US07125577 (26 worldwide citation)

The invention relates to methods and apparatuses that reduce problems encountered during coating of a device, such as a medical device having a cylindrical shape. In an embodiment, the invention includes an apparatus including a bi-directional rotation member. In an embodiment, the invention include ...