Stock material or miscellaneous articles – Composite – Of metal
Reexamination Certificate
2011-08-02
2011-08-02
Lam, Cathy (Department: 1784)
Stock material or miscellaneous articles
Composite
Of metal
C428S210000, C174S07400A, C174S262000, C174S255000, C174S257000, C174S258000, C439S055000
Reexamination Certificate
active
07989080
ABSTRACT:
A method and apparatus suitable for forming hermetic electrical feedthroughs in a ceramic sheet having a thickness of ≦40 mils. More particularly, the method yields an apparatus including a hermetic electrical feedthrough which is both biocompatible and electrochemically stable and suitable for implantation in a patient's body. The method involves: (a) providing an unfired, ceramic sheet having a thickness of ≦40 mils and preferably comprising ≧99% aluminum oxide; (b) forming multiple blind holes in said sheet; (c) inserting solid wires, preferably of platinum, in said holes; (d) firing the assembly of sheet and wires to a temperature sufficient to sinter the sheet material but insufficient to melt the wires; and (e) removing sufficient material from the sheet lower surface so that the lower ends of said wires are flush with the finished sheet lower surface.
REFERENCES:
patent: 3517437 (1970-06-01), Szobonya
patent: 3999004 (1976-12-01), Chirino et al.
patent: 5046242 (1991-09-01), Kuzma
patent: 5095246 (1992-03-01), Feuersanger et al.
patent: 5109844 (1992-05-01), de Juan, Jr. et al.
patent: 5229549 (1993-07-01), Yamakawa et al.
patent: 5241216 (1993-08-01), Webster
patent: 5272283 (1993-12-01), Kuzma
patent: 5368220 (1994-11-01), Mizuhara et al.
patent: 5515604 (1996-05-01), Horine et al.
patent: 5640764 (1997-06-01), Strojnik
patent: 5738270 (1998-04-01), Malmgren
patent: 5817984 (1998-10-01), Taylor et al.
patent: 5935155 (1999-08-01), Humayun et al.
patent: 5997999 (1999-12-01), Horiuchi et al.
patent: 6093476 (2000-07-01), Horiuchi et al.
patent: 6174175 (2001-01-01), Behfar et al.
patent: 6329631 (2001-12-01), Yueh
patent: 6400989 (2002-06-01), Eckmiller
patent: 6458157 (2002-10-01), Suaning
Greenberg Robert J.
Ok Jerry
Dunbar Scott B.
Lam Cathy
Lendvai Tomas
Second Sight Medical Products, Inc.
LandOfFree
Method and apparatus for providing hermetic electrical... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for providing hermetic electrical..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for providing hermetic electrical... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2694760