Patents by Inventor Peter John Stephenson

Peter John Stephenson 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 and apparatus for forming a thin-walled elastomeric article
    Patent number: 6649116
    Abstract: A process for making thin-walled elastomeric articles. The process includes the steps of electrostatically spraying charged particles of an elastomeric composition into a chamber containing a rigid shaped former having an earthed conductive surface whereby the charged particles of the composition are attracted to the conductive surface of the former to form a coating of the composition thereon, consolidating the coating to produce the thin-walled article on the former, and stripping the article from the shaped former. The process according to the present invention can be used to produce condoms, surgical gloves, and other thin-walled articles having a thickness typically in the range of 20 to 200 microns, and more preferably 40 to 100 microns. Using the invention, it is possible to make thin-walled articles with a uniform thickness, even when the shape of the article is quite complex.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: November 18, 2003
    Inventors: Peter John Stephenson, Timothy Martin Tickner
  • PROCESS AND APPARATUS FOR FORMING A THIN-WALLED ELASTOMERIC ARTICLE
    Publication number: 20030197311
    Abstract: Thin walled elastomeric articles are made by electrostatically depositing a coating of an elastomeric composition on a rigid shape former (24), consolidating the coating and then stripping the article (30) from the former. Gloves and condoms are among the articles which can be made in this way.
    Type: Application
    Filed: November 16, 1998
    Publication date: October 23, 2003
    Inventors: PETER JOHN STEPHENSON, TIMOTHY MARTIN TICKNER