Patents by Inventor Horst W. Heyer

Horst W. Heyer 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 the manufacture of paper webs having CF or CB layers for pressure-sensitive recording
    Patent number: 5597612
    Abstract: A process is disclosed for manufacturing paper web containing a CF layer for pressure sensitive recording paper. In order to ensure full sizing, the paper web is subjected to intermass sizing and the coating ink containing color acceptors constituted of color-reactive, mineral pigments is applied with a coating device in which the paper web is guided between two transfer rollers separated by a gap or set at minimal pressure. One of the transfer rollers applies volumetrically pre-dosed coating ink by means of a rotary and driven surface-profiled doctor bar, forming the CF layer on one side of the paper web, and the other transfer roller at the same time applies a volumetrically pre-dosed aqueous solution on the other side of the paper web, also by means of a rotary driven surface-profiled doctor bar. The amount of color-reactive pigment in the dried CF-layer comprises between 3.5 and 5 g/m.sup.2.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: January 28, 1997
    Assignee: Stora Feldmuhle AG
    Inventors: Horst Schoen, Horst W. Heyer, Wolfram Friesen
  • First sheet for copysets
    Patent number: 5284813
    Abstract: The upper surface of an upper sheet for a carbon copy system made of pressure-sensitive self-copying paper has a layer, designed to be printed on, made of pigment, binder and water-repelling agent, to increase the opacity and control the bonding properties for ease of sheet detachment.
    Type: Grant
    Filed: December 3, 1991
    Date of Patent: February 8, 1994
    Assignee: Feldmuhle Aktiengesellschaft
    Inventor: Horst W. Heyer