Chun K Wong

US Patent:

58666524, Feb 2, 1999

Filed:

Feb 27, 1996

Appl. No.:

8/607514

Inventors:

Harold E. Hager - Bellevue WA
Chris J. Johnson - Seattle WA
Kay Y. Blohowiak - Issaquah WA
Chun M. Wong - Seattle WA
John H. Jones - Seattle WA
S. Ray Taylor - Charlottesville VA
Robert L. Cook - Seattle WA

Assignee:

The Boeing Company - Seattle WA

International Classification:

C08J 338

US Classification:

524701

Abstract:

The invention provides chromate-free coating mixtures, and coatings formed from these mixtures, that protect an underlying aluminum or aluminum alloy substrate from corrosion. The coating mixtures include a continuous phase selected from organic polymeric compositions, or sol-gels, and a distributed phase, dispersed or dissolved throughout the continuous phase. The distributed phase includes the corrosion-inhibiting chromate-free salts. In accordance with the invention, the mixture of salts includes (1) a first salt selected from (a) the esters of rare earth metals, such as cerium and lanthanum oxalates and acetates, and (b) the vanadate salts of alkali and alkali earth metals, such as sodium metavanadate and calcium metavanadate; and (2) a second salt that is a borate salt of alkali earth metals, such as barium metaborate. In certain embodiments, the coatings of the invention include both (a), and (b), in conjunction with the borate salt (2). In other embodiments, the chromate free salt is a chloride of a rare earth metal, or mixture of such chlorides, either alone or in combination with the first salt or the second salt, or both the first and second salts.

US Patent:

60778857, Jun 20, 2000

Filed:

Dec 23, 1998

Appl. No.:

9/221030

Inventors:

Harold E. Hager - Bellevue WA
Chris J. Johnson - Seattle WA
Kay Y. Blohowiak - Issaquah WA
Chun M. Wong - Seattle WA
John H. Jones - Seattle WA
Robert L. Cook - Seattle WA
S. Ray Taylor - Charlottesville VA

Assignee:

The Boeing Company - Seattle WA

International Classification:

C08K 338
C08L 6302

US Classification:

523445

Abstract:

The invention provides chromate-free coating mixtures, and coatings formed from these mixtures, that protect an underlying aluminum or aluminum alloy substrate from corrosion. The coating mixtures include a continuous phase selected from organic polymeric compositions, or sol-gels, and a distributed phase, dispersed or dissolved throughout the continuous phase. The distributed phase includes the corrosion-inhibiting chromate-free salts. In accordance with the invention, the mixture of salts includes (1) a first salt selected from (a) the esters of rare earth metals, such as cerium and lanthanum oxalates and acetates, and (b) the vanadate salts of alkali and alkali earth metals, such as sodium metavanadate and calcium metavanadate; and (2) a second salt that is a borate salt of alkali earth metals, such as barium metaborate. In certain embodiments, the coatings of the invention include both (a), and (b), in conjunction with the borate salt (2). In other embodiments, the chromate free salt is a chloride of a rare earth metal, or mixture of such chlorides, either alone or in combination with the first salt or the second salt, or both the first and second salts.

US Patent:

20220375255, Nov 24, 2022

Filed:

Feb 4, 2020

Appl. No.:

17/619935

Inventors:

- Singapore, SG
Chun Tung WONG - Seattle WA, US
Munirul ABEDIN - Sammamish WA, US
Yee Won NYON - Singapore, SG

International Classification:

G06V 40/16
G06F 16/51
G06F 16/535

Abstract:

A method of verifying a user for transportation purposes is disclosed. The method may include using a communication apparatus to detect a face of the user. The method may include using the communication apparatus to instruct the user to perform a specific action, to validate that the specific action is performed by the user, to extract a frame from the specific action to use as an image, to obtain image parameters from the frame and to use the communication apparatus to send the image to a server for the server to determine whether the image is a genuine face by comparing the image parameters of the image with parameters in a database to obtain a comparison result and to use the comparison result to determine if the user should be verified.FIG.