Patents by Inventor Ivan E. Lieberman

Ivan E. Lieberman 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).

  • Textured construction material and method of fabricating
    Patent number: 5215699
    Abstract: A rigid, durable construction material is described along with a method for making the material. The material is particularly characterized by having a specific, textured surface which can resemble stucco and which can be reproduced exactly any desired number of times. The unique surface charactistics of the invention are obtained by preparing a reusable mold which is obtained by a reverse casting of a polymeric gel onto a cellular foam surface. The construction material of the invention is essentially a laminated, rigid backing having a polymeric surface with the desired texture obtained by casting onto the reusable mold.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: June 1, 1993
    Inventor: Ivan E. Lieberman
  • Textured construction material and method of fabrication
    Patent number: 5070668
    Abstract: A rigid, durable construction material is described along with a method for making the material. The material is particularly characterized by having a specific, textured surface which can resemble stucco and which can be reproduced exactly any desired number of times. The unique surface characteristics of the invention are obtained by preparing a reusable mold which is obtained by a reverse casting of a polymeric gel onto a cellular foam surface. The construction material of the invention is essentially a laminated, rigid backing having a polymeric surface coating with the desired texture obtained by casting a polymeric gel onto the reusable mold.
    Type: Grant
    Filed: November 24, 1989
    Date of Patent: December 10, 1991
    Inventor: Ivan E. Lieberman