Patents by Inventor Gilbert Lecomte

Gilbert Lecomte 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).

  • Method of making a plastic material sensitive to laser radiation and enabling it to be marked by a laser, and articles obtained thereby
    Patent number: 4816374
    Abstract: An opacifier substance is added to a plastic material which is naturally transparent to laser radiation. The opacifier substance is added in powder form as a concentration of 2% to 6% by weight of the plastic material. The opacifier substance is preferably antimony oxide and the resulting plastic material is capable of being permanently marked by a laser beam and is suitable for providing animal ear tags. These tags may be marked with an automatically readable bar code and this code continues to be automatically readable over a period of several years use on the animal.
    Type: Grant
    Filed: April 9, 1986
    Date of Patent: March 28, 1989
    Assignee: Societe d'Applications Plastiques Rhone-Alpes (SAPRA)
    Inventor: Gilbert Lecomte