Mei Yu Chang

US Patent:

7232444, Jun 19, 2007

Filed:

Jun 24, 2003

Appl. No.:

10/602836

Inventors:

Mei Yin Chang - Pomona CA, US

International Classification:

A61B 17/50

US Classification:

606131, 451 39, 211 8518

Abstract:

A canister rack system for a microdermabrasion machine has a base with bores. The base has conduits for crystal passage through the canister rack. The canisters are mountable upon the canister rack and include supply and storage canisters. The supply canister has a feeding conduit for the exit of crystal from the supply canister and the storage canister has a return conduit and a filtered conduit. The canister rack bores are formed at the base so that the conduits from the storage canister and supply canister meet with their respective conduits to form an airtight seal. A Horizontal locking pin protrudes from each canister and locks into a pair of horizontal slots formed in the canister rack. A vertical locking pin protrudes from the base of the canister rack and locks into a slot formed in each canister. A latch attaches each canister to the canister rack.

US Patent:

20130200518, Aug 8, 2013

Filed:

Jan 24, 2013

Appl. No.:

13/748910

Inventors:

Khaled Z. Ahmed - Anaheim CA, US
Prabu Gopalraja - San Jose CA, US
Atif Noori - Saratoga CA, US
Mei Chang - Saratoga CA, US

International Classification:

H01L 21/768
H01L 23/482
H01L 21/67

US Classification:

257750, 118696, 118697, 20429825, 438652

Abstract:

Described are apparatus and methods for forming films comprise indium and arsenic. In particular, these films may be formed in a configuration of two or more chambers under “load lock” conditions. These films may include additional components as dopants, such as aluminum and/or gallium. Such films can be used in metal/silicon contacts having low contact resistances. Also disclosed are devices including the films comprising indium arsenide.