Patents by Inventor Keith Reid Tatchell

Keith Reid Tatchell 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).

  • Film base material
    Patent number: 3983301
    Abstract: The present invention relates to film base material. A film of synthetic linear polyester has superimposed thereon a phenoxy resin of the formula ##SPC1##Wherein each of R.sub.1 to R.sub.7 is a hydrogen atom or a lower alkyl or cyclohexyl group, R.sub.8 is a hydrogen atom or an acyl radical of the formula ##EQU1## wherein m is 0 to 6, at least one of X, Y and Z is a chlorine or bromine atom or a cyano group, the other of X, Y and Z are each hydrogen atoms or bromine or chlorine atoms, n is at least 50 and from 50 to 100 % of the R.sub.8 groups are a said acyl residue. An improved adhesion between the film base material of this composition and a hydrophilic layer coated thereon is achieved.
    Type: Grant
    Filed: May 16, 1974
    Date of Patent: September 28, 1976
    Assignee: Ilford Limited
    Inventors: Robert Stanley Cook, Keith Reid Tatchell, Kenneth Archibald Cockerton