Charles Margaret Armstrong

US Patent:

6520366, Feb 18, 2003

Filed:

Mar 28, 2000

Appl. No.:

09/537896

Inventors:

Vincent H. Bradley - Dallas TX 75230
Roger D. Chafin - Addison TX 75001-4402
Charles M. Armstrong - Addison TX 75001

International Classification:

B65D 2102

US Classification:

220 232, 220 234, 220 236

Abstract:

Beverage container holders which typically include a single-cup beverage container holder, a dual-cup beverage container holder, a three-cup beverage container holder and a four-cup beverage container holder. The respective beverage container holders are each characterized by at least one container cup and a handle attached to the container cup, which handle is typically hollow and serrated or scalloped to facilitate non-rotatable nesting of the handles of two or more of the beverage container holders in either stored or functional configuration. The various configurations of the container cups on the handles facilitates selective positioning of the container cups of multiple nested beverage container holders, to enable an individual to carry a selected number of beverages using one hand at the nested handles. In another embodiment, a dual tray characterized by a pair of typically recessed and/or planar tray surfaces extending from a common serrated handle can be used alone to carry food, or in handle-nested combination with one or more of the beverage container holders for carrying both food and a drink or drinks using one hand.

US Patent:

7618026, Nov 17, 2009

Filed:

Aug 30, 2006

Appl. No.:

11/512857

Inventors:

Charles M. Armstrong - Addison TX, US

International Classification:

B01F 3/04

US Classification:

261111, 526541

Abstract:

A cooling tower fill support grid assembly and method of use which includes multiple cooling tower assembly fill hangers, each having a grid pattern that defines multiple grid openings of selected size. In one embodiment an anchor rivet pin extends from the horizontal grid members upwardly and disproportionally spaced-apart from the vertical grid members, into each grid opening. The anchor rivet pins are located off-center on the horizontal grid members between respective vertical grid members for engaging elliptical splash fills that are inserted in the aligned grid openings of adjacent assembly fill hangers in a first configuration. Once so inserted, the elliptical splash fills are rotated ninety-degrees into contact and engagement with the anchor rivet pins in a second, installed configuration. In another embodiment resilient, perforated plate splash fills are seated in the fill hangers and are removably retained between the respective vertical grid members by notches or nibs provided in or on the vertical grid members. The top edge of each assembly fill hanger typically has a notched flange for stacking and seating on the cooling tower frame and holes are provided in the flange for receiving nails.

US Patent:

8058212, Nov 15, 2011

Filed:

Oct 15, 2009

Appl. No.:

12/579771

Inventors:

Charles David Armstrong - Tomball TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

C09K 8/60

US Classification:

507201, 435267

Abstract:

A thermophilic mannanohydrolase enzyme may be used as an enzyme breaker for fracturing fluids containing hydratable polymers of guar and underivatized guar. The enzyme is effective in downhole temperatures exceeding 160 F.

US Patent:

8096360, Jan 17, 2012

Filed:

Nov 21, 2008

Appl. No.:

12/275951

Inventors:

Charles David Armstrong - Tomball TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 43/26
C09K 8/68

US Classification:

166300, 1663085, 507201, 507211, 507214, 507903, 507921, 507922

Abstract:

Methods and compositions of fracturing formations are provided. The fracturing fluid includes an enzyme breaker that decreases the viscosity of the fracturing fluid over time. The enzyme breaker can be used in environments having a pH value ranging from about 7 to about 12.

US Patent:

8486867, Jul 16, 2013

Filed:

Nov 10, 2011

Appl. No.:

13/294082

Inventors:

Charles David Armstrong - Tomball TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

C09K 8/60

US Classification:

507201, 435262

Abstract:

A thermophilic mannanohydrolase enzyme may be used as an enzyme breaker for fracturing fluids containing hydratable polymers of guar and underivatized guar. The amino acid sequence of the mannanohydrolase is at least 90% homologous to the amino acid sequence of SEQ ID NO:2.

US Patent:

8517095, Aug 27, 2013

Filed:

Aug 9, 2010

Appl. No.:

12/852915

Inventors:

Charles David Armstrong - Tomball TX, US
Qi Qu - Spring TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

E21B 47/00
E21B 43/27

US Classification:

1662525, 166300, 1663051

Abstract:

A hydrocarbon-bearing subterranean formation may be treated with an aqueous well treatment fluid which contains a hexose oxidase, such as glucose oxidase, mannose oxidase or galactose oxidase. The aqueous well treatment fluid further may contain a viscosifying polymer and an aldohexose. The aldohexose reacts in-situ with the hexose oxidase and molecular oxygen to produce hydrogen peroxide. The hydrogen peroxide may then act as a breaker.

US Patent:

20120111568, May 10, 2012

Filed:

Jan 16, 2012

Appl. No.:

13/351137

Inventors:

Charles David Armstrong - Tomball TX, US

International Classification:

E21B 43/26
C09K 8/68

US Classification:

1663085, 507201

Abstract:

Methods and compositions of fracturing formations are provided. The fracturing fluid includes an enzyme breaker that decreases the viscosity of the fracturing fluid over time. The enzyme breaker can be used in environments having a pH value ranging from about 7 to about 12.

US Patent:

20120227971, Sep 13, 2012

Filed:

Mar 8, 2011

Appl. No.:

13/043349

Inventors:

Charles David Armstrong - Tomball TX, US
Hoang Le - Spring TX, US
Bharath Rajappa - Englewood CO, US
Qi Qu - Spring TX, US

International Classification:

E21B 43/26
C09K 8/62

US Classification:

1663081, 507201

Abstract:

The allosteric effectors, sulfate and phosphate, can be used with mannanohydrolase enzymes to better control the break of gelled fracturing fluids in wellbore operations.