Cutlery – Blades – Metallurgical feature
Reexamination Certificate
2011-08-09
2011-08-09
Payer, Hwei-Siu C (Department: 3724)
Cutlery
Blades
Metallurgical feature
C076S104100
Reexamination Certificate
active
07992309
ABSTRACT:
A cutting blade is disclosed fabricated of micromachined silicon. The cutting blade utilizes a monocrystalline silicon substrate having a {211} crystalline orientation to form one or more cutting edges that are defined by the intersection of {211} crystalline planes of silicon with {111} crystalline planes of silicon. This results in a cutting blade which has a shallow cutting-edge angle θ of 19.5°. The micromachined cutting blade can be formed using an anisotropic wet etching process which substantially terminates etching upon reaching the {111} crystalline planes of silicon. This allows multiple blades to be batch fabricated on a common substrate and separated for packaging and use. The micromachined cutting blade, which can be mounted to a handle in tension and optionally coated for increased wear resistance and biocompatibility, has multiple applications including eye surgery (LASIK procedure).
REFERENCES:
patent: 3201867 (1965-08-01), Case
patent: 3342754 (1967-09-01), Gorham
patent: 4534827 (1985-08-01), Henderson
patent: 4697489 (1987-10-01), Kim
patent: 5214011 (1993-05-01), Breslin
patent: 5222967 (1993-06-01), Casebeer
patent: 5250150 (1993-10-01), Gaud et al.
patent: 5317938 (1994-06-01), de Juan, Jr.
patent: 5338400 (1994-08-01), Jerman
patent: 5380320 (1995-01-01), Morns
patent: 5579583 (1996-12-01), Mehregany
patent: 5683592 (1997-11-01), Bartholomew
patent: 5713133 (1998-02-01), Bhat
patent: 5728089 (1998-03-01), Lal
patent: 5792137 (1998-08-01), Carr
patent: 5842387 (1998-12-01), Marcus
patent: 5944717 (1999-08-01), Lee
patent: 5980518 (1999-11-01), Carr
patent: 6353204 (2002-03-01), Spaay et al.
patent: 7124511 (2006-10-01), Hamada et al.
patent: 2002/0078576 (2002-06-01), Carr et al.
patent: 2005/0132581 (2005-06-01), Jessing
patent: 2005/0144789 (2005-07-01), Pilchowski
patent: 2005/0188548 (2005-09-01), Daskal et al.
patent: 2005/0210684 (2005-09-01), Newman
patent: 2010/0023041 (2010-01-01), Satake et al.
Fleming James G.
Fleming, legal representative Carol
Montague Stephen
Sniegowski Jeffry J.
Hohimer John P.
Payer Hwei-Siu C
Sandia Corporation
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