Patents by Inventor Eizi Hayakawa

Eizi Hayakawa 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).

  • Patent number: 4430379
    Abstract: In a master plate for dry lithographic printing comprising (1) a substrate and (3) an ink-repellent silicone layer formed thereon, the improvement wherein a toner anchoring layers (2) composed of a resin having compatibility with an image layer (5) to be superimposed on the silicone layer (3) during image making or a resin containing an active group capable of reacting with the image layer (5) during image making is formed between the substrate (1) and the silicone layer (3), and wherein the silicone layer (3) is composed of a silicone resin containing a fluorine-containing surface-active compound of the formulaRf--X--Ywherein Rf represents a fluorinated aliphatic radical having 3 to 12 carbon atoms, X represents a divalent linking group, and Y represents a hydrophilic group having a nitrogen-containing linking moiety or a phosphorus containing linking moiety.
    Type: Grant
    Filed: August 25, 1981
    Date of Patent: February 7, 1984
    Assignees: Dainippon Ink & Chemicals Inc., Kawamura Institute of Chemical Research
    Inventors: Eizi Hayakawa, Akio Kojima, Yoshi Arai, Masatoshi Sakuma, Yukichi Toyoshima