Patents by Inventor Karl J. Callaghan

Karl J. Callaghan 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).

  • Patent number: 6162401
    Abstract: A cytofunnel arrangement, for use in preparation of slides for microscopic examination, comprises in combination, a specimen funnel 14, a microscope slide 12 and a slide holder 10 which holds the slide against a port 36 in a base portion of the specimen funnel 14, the slide holder being integrally connected with the specimen funnel and being adapted for destructive separation from the specimen funnel along predetermined lines or regions to allow extraction of the slide 12 undamaged. The specimen funnel and the slide holder may be of compatible plastics and may be connected by adhesive or may be welded together. A tear strip or separation filament 50 located between the specimen funnel and slide holder may be provided to assist separation of the two components. The tear strip 50 may be formed by an electrical resistance wire utilized initially to bond the specimen funnel and slide holder together by electrofusion welding.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: December 19, 2000
    Assignee: Shandon Scientific Limited
    Inventor: Karl J. Callaghan