Patents by Inventor Harry R. Hadfield

Harry R. Hadfield 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).

  • Transfer printing with carboxylic dyes
    Patent number: 4128395
    Abstract: A process for the transfer color printing of synthetic textile materials which comprises placing a transfer material which carries a colored pattern derived from one or more disperse dyestuffs each containing at least one carboxylic acid group in contact with a synthetic textile material and heating the transfer material and the synthetic textile material while in contact so as to transfer the dyestuff from the transfer material to the synthetic textile material.
    Type: Grant
    Filed: December 10, 1973
    Date of Patent: December 5, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: Harry R. Hadfield, Harry H. Sumner, Gerald Williams