Patents by Inventor Vjatsjeslev Rovnjev

Vjatsjeslev Rovnjev 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).

  • Process for making color separation negatives and positives for use in multi-color printing
    Patent number: 4241153
    Abstract: Negative and positive films for use in multi-color printing are prepared by a process which utilizes crystals and interstices therebetween in color-separation negatives for multi-color printing without the use of half-tone screens. Exposure through masks of controlled density ranges relative to the color-separation negatives and positives prepared from the color original result in final negatives and positives as well as duplication negatives and positives which can be utilized in the multi-color printing process.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: December 23, 1980
    Assignee: AB Bates a/s
    Inventor: Vjatsjeslev Rovnjev