Nga Thi Nguyen

US Patent:

41394402, Feb 13, 1979

Filed:

Jun 20, 1977

Appl. No.:

5/808378

Inventors:

Andreas Chrambach - Bethesda MD
Nga Y. Nguyen - Kensington MD

Assignee:

Government of the United States - Washington DC

International Classification:

G01N 2726

US Classification:

204180G

Abstract:

Methods of electrofocusing in amphoteric or non-amphoteric buffers is disclosed. In such methods, buffers are employed as carrier constituents, and optionally as anolyte and catholyte. Using a buffer electrofocusing system, stability with time has been achieved for a natural pH gradient.

US Patent:

20200383535, Dec 10, 2020

Filed:

Jun 5, 2020

Appl. No.:

16/946099

Inventors:

Nga Ngoc-Thi Nguyen - Pompano Beach FL, US

International Classification:

A47L 9/02

Abstract:

A vacuum cleaner protective guard is disclosed. My invention will save homeowners and business owners a lot of time and money because it eliminates the frequency of repainting, repairing, refinishing, retouching their baseboard, doors, and the bases of their furniture. A padded non-scuff material selected to be resistant to transfer to a finished surface of a structure through a frictional contact with the finished surface has a length corresponding to a front face and at least a portion of a side face of the suction head. Preferably the padded non-scuff material is felt.

Address:

1601 S Meade St, Denver, CO 80219

Phone:

7202426563

VIN:

5J6TF2H52CL003406

Make:

HONDA

Model:

CROSSTOUR

Year:

2012