04992794 is referenced by 243 patents and cites 17 patents.

An implantable transponder has a plastic holder having a hollow interior and preferably a rough outer surface, a transmit/receive unit within the hollow interior of the holder, and an electronic element electrically connected to said transmit/receive unit within the hollow interior of said holder. The transmit/receive unit includes a core and coil assembly which may be impregnated with wax, and the hollow interior of the holder is at least partially filled with a plastic filler material such as polysiloxane.

Title
Transponder and method for the production thereof
Application Number
7/419043
Publication Number
4992794
Application Date
October 10, 1989
Publication Date
February 12, 1991
Inventor
Arnoldus M Brouwers
Wierden
NL
Agent
Melvin Sharp
James T Comfort
James C Kesterson
Assignee
Texas Instruments Incorporated
TX, US
IPC
G01S 9/02
View Original Source