Patents by Inventor Constantine Chris Petropoulos

Constantine Chris Petropoulos 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).

  • Radiation sensitive polymeric o-nitrophenyl acetals
    Patent number: 4086210
    Abstract: Radiation-sensitive linear polymers comprise repeating structural units containing an o-nitrophenyl acetal. The polymer is formed, for example, by the linear polycondensation of o-nitrobenzaldehyde with a particular dihydroxy alcohol. The polymers are useful as coatings to form positive-working radiation-sensitive elements such as photoresists or lithographic printing plates.
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: April 25, 1978
    Assignee: Eastman Kodak Company
    Inventor: Constantine Chris Petropoulos