Patricia Garcia

6541069, Apr 1, 2003

Jul 9, 2001

09/901370

Patricia McGrew Garcia - Houston TX, 77071

B05D 136

427402, 4273761, 4273972

This disclosure sets out a method of forming a protective layer on the surface of the material of drill bits to increase the number of hits when drilling very small holes such as those drilled in printed circuit board (PCBs). The process involves forming a phosphorous based solution which is used as a dip to treat the drill bits, and then it is heated to drive off the solvent which is primarily water, oil, or glycol. This leaves a protective layer featuring phosphorous based materials on the surface of drill bit. This works for tool steel drill bits and also for those made with a cobalt alloy holding together tungsten carbide particles. The method preferably includes applying a treatment fluid in lieu of cutting oil during the fabrication of the cutting tool, the fluid including a compound containing phosphorus and nitrogen/hydrogen groups.

56743238, Oct 7, 1997

Jun 12, 1995

8/489552

Patricia M. Garcia - Houston TX

American International, Inc. - Houston TX

B08B 312
B08B 902

134 1

A method of cleaning in a pipe which has fouling material on the interior so that the bond with the fouling material is broken by first filling the pipe with liquid, applying pressure pulsations to the liquid to the extent that a standing wave is formed in the pipe and the incompressible liquid therein, and cavitation is initiated within the standing wave in the pipe so that the pipe is cleaned on the formation of induced shock waves occurring upon collapse of microscopic bubbles resulting from cavitation and subsequent collapse.

20170137664, May 18, 2017

Dec 16, 2016

15/381554

- Columbus OH, US
Patricia Garcia - Katy TX, US
Larry Steven Corley - Houston TX, US
Bedri Erdem - Missouri City TX, US
Lucy Phan - Tomball TX, US

C09D 163/00
C08G 59/18

Compositions, methods, and coating composition using a curing agent are provided herein. In one embodiment, a curing agent for epoxy resins may be prepared using a formulation including: (a) an adduct of: (i) a diglycidyl ether of a bisphenol, and (ii) a first polyamine; (b) a second polyamine; and (c) water; wherein the composition has an amine hydrogen equivalent weight, based on solids, of less than or equal to 105.

20160177125, Jun 23, 2016

Dec 19, 2014

14/576848

- Stafford TX, US
Patricia Garcia - Katy TX, US
Larry Steven Corley - Houston TX, US
Bedri Erdem - Missouri City TX, US
Lucy Phan - Tomball TX, US

C09D 163/00
C08G 59/02

Compositions, methods, and coating composition using a curing agent are provided herein. In one embodiment, a curing agent for epoxy resins may be prepared using a formulation including: (a) an adduct of: (i) a diglycidyl ether of a bisphenol, and (ii) a first polyamine; (b) a second polyamine; and (c) water; wherein the composition has an amine hydrogen equivalent weight, based on solids, of less than or equal to 105.