Jayesh B Patel

US Patent:

59440490, Aug 31, 1999

Filed:

Jul 15, 1997

Appl. No.:

8/893032

Inventors:

Christian Beyer - Cologne, DE
Keith Trenton - San Jose CA
Mariusch Gregor - Cologne, DE
Robert Stolle - Cologne, DE
Rudolph Bahnen - Roedgen, DE
Anja Plugge - Solingen, DE
Heinz Frings - Cologne, DE
Karl-Heinz Ronthaler - Zuelpich, DE
Dennis Smith - San Jose CA
Jayesh Patel - Fremont CA

Assignee:

Applied Materials, Inc. - Santa Clara CA
Leybold Vacuum GmbH - Cologne

International Classification:

F16K 3112
F17D 116
E03B 2509

US Classification:

1374875

Abstract:

A pressure for a chamber is regulated by controlling either the exhaust pressure at the exhaust side of a first vacuum pump or the internal pressure at a compression stage of the first vacuum pump, where the first vacuum pump is directly communicating with the chamber. The pressure of the chamber can be regulated by combinations of the following: controlling the variable rotational frequency of a roots vacuum pump, a pre-vacuum pump, or a high compression pump; controlling a control valve between a pre-vacuum pump and the first vacuum pump; controlling a control valve for injecting gas into the exhaust side of the first vacuum pump or into the compression stage of the first vacuum pump; and controlling a control valve or control valves for bypassing the first vacuum pump or a compression stage or compression stages of the first vacuum pump. To regulate the pressure in the chamber, several types of control rules can be used, including: a PID control rule, a gain scheduler, and a threshold comparison control rule.

US Patent:

20170317823, Nov 2, 2017

Filed:

Apr 28, 2017

Appl. No.:

15/581501

Inventors:

Amish Gaganvihari Gandhi - San Jose CA, US
Jayesh Patel - Poughkeepsie NY, US

International Classification:

H04L 9/08
H04L 9/08
H04L 9/08

Abstract:

A method for secure file sharing comprises a sender encrypting content using a dynamic key and uploading the encrypted content and a share link which is sent to a server. The server stores the encrypted content until a request to decrypt the content is received from a receiver. The receiver selects the share link and decrypts the content using a partial dynamic key. Once content is decrypted, a download link is sent and decrypted content is conveyed to the receiver.