Specific Material Patents (Class 15/446)
  • Patent number: 10455919
    Abstract: A pen has an ink reservoir configured to store an ink containing decorative particles and a pen tip configured to apply the ink to an ink coating target. The pen tip includes a proximal end to which the ink is supplied from the ink reservoir, a distal end opposite to the proximal end and configured to contact the ink coating target, and a groove opening on the outer circumferential surface of the pen tip and extending from the proximal end to the distal end.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: October 29, 2019
    Assignee: Kuretake Co., Ltd.
    Inventor: Natsumi Saito
  • Patent number: 9815316
    Abstract: The present invention uses a material that is not conventionally used in fountain pen nibs in order to provide a fountain pen nib that is completely different from the prior art. This found pen nib comprises one of corundum, topaz, emerald, and garnet as a main material. It is also possible to replace the heart hole and the slit of the nib with a groove that is added to the rear surface of the nib. By using one of the abovementioned gems as the main material in a faun-tain pen nib, it is possible to achieve wear resistance and chemical resistance in the fountain pen nib while imparting a luxurious feel and originality to a fountain pen.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: November 14, 2017
    Assignee: AKITA GRIND INDUSTRY CO., LTD.
    Inventor: Tadao Abe
  • Patent number: 9421813
    Abstract: Stylographic pen provided with a pen nib including an aeration hole, a slit, a tip and a precious material plate made of any precious material, wherein the plate made of precious material is placed in proximity to the aeration hole and in proximity to the ink present in the pen nib.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: August 23, 2016
    Assignee: DELTA S.R.L.
    Inventors: Gennaro Marino, Ciro Matrone
  • Patent number: 6771254
    Abstract: A nib for a stylus for use with a tablet and stylus computer. The nib provides a desired amount of firmness and friction between the stylus and a writing surface of the tablet and stylus computer. A nib substrate material approximates a desired nib-and-writing-surface firmness and a desired amount of friction between the nib and the writing surface. A secondary material is optionally added to the nib substrate material to alter the amount of friction between the stylus nib and the writing surface.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: August 3, 2004
    Assignee: Microsoft Corporation
    Inventors: Bin An, Vincent Jesus