David A Coffey

US Patent:

53869680, Feb 7, 1995

Filed:

Oct 21, 1993

Appl. No.:

8/139138

Inventors:

David A. Coffey - Austin TX
Samir S. Ashrawi - Austin TX
Edward C. Nieh - Austin TX

Assignee:

Texaco Chemical Inc. - White Plains NY

International Classification:

C09K 318

US Classification:

252 70

Abstract:

De-icing compositions, such as used on aircraft wing surfaces, are found to not need thickeners to obtain acceptable holdover times. The compositions are based on an alkylene glycol component (such as propylene glycol, diethylene glycol and mixtures thereof), and obtain particular advantage when a nonionic alkylphenol ethoxylate surfactant is used in conjunction with an alkylaryl sulfonate hydrotrope, as additives. This latter combination of additives gives de-icing compositions with increased holdover times with no degradation of other properties. These compositions exhibit a Newtonian rheology as required for de-icing compositions.

US Patent:

53892763, Feb 14, 1995

Filed:

Nov 15, 1993

Appl. No.:

8/151688

Inventors:

David A. Coffey - Austin TX
Richard A. Armstrong - Austin TX

Assignee:

Texaco Inc. - White Plains NY

International Classification:

C09K 318

US Classification:

252 70

Abstract:

Disclosed is an ethylene glycol based deicing/anti-icing composition which contains a thickener comprising a polyacrylic acid having a molecular weight of from about 90,000 to 100,000 and a wetting agent from the group consisting of nonylphenol ethoxylates, alkarylsulfonates, polyoxyethylene phosphates and tetrafunctional block copolymers of EO/PO on an ethylene diamine backbone and demonstrates improvement in anti-icing ability as measured by holdover time while not adversely effecting aerodynamic performance or Newtonian rheology of the deicer measured by passing the minimum requirements of the AMS test for Type I fluids.

US Patent:

52736733, Dec 28, 1993

Filed:

Aug 31, 1992

Appl. No.:

7/937011

Inventors:

Samir S. Ashrawi - Austin TX
David A. Coffey - Austin TX

Assignee:

Texaco Chemical Company - White Plains NY

International Classification:

C09K 318

US Classification:

252 70

Abstract:

Anti-icing compositions, such as used on aircraft wing surfaces, may be thickened using a blend of a polyacrylic acid and a copolymer of polyacrylic acid with a vinyl monomer, where the copolymer acts as a thickener modifier. Additional advantages are obtained when a low molecular weight nonionic alkylphenol ethoxylate surfactant is used in conjunction with an alkylaryl sulfonate hydrotrope, as additives. This latter combination of additives gives anti-icing compositions with increased holdover times with no degradation of other properties. The compositions also contain an alkylene glycol component, such as propylene glycol, diethylene glycol and mixtures thereof. These compositions retain a high viscosity, even when diluted with water, and exhibit a highly pseudoplastic rheology indicating desirable flow off characteristics.

US Patent:

54363519, Jul 25, 1995

Filed:

Aug 27, 1993

Appl. No.:

8/112295

Inventors:

David A. Coffey - Austin TX
Wei-Yang Su - Austin TX

Assignee:

Huntsman Corporation - Salt Lake City UT

International Classification:

C07D23332

US Classification:

5483241

Abstract:

Disclosed is a novel composition of the formula: ##STR1## wherein R=H, methyl, ethyl, or a mixture thereof and R. sup. 5 =a saturated or unsaturated alkyl group from a fatty acid containing 7 to 22 carbon atoms and a+b=n, wherein n is from about 2 to 80, resulting from alkoxylating an substituted imidazolidone, reductively aminating the alkoxylated product and reacting the aminated product with a fatty acid; and, to its use as a surfactant in glycol-water mixtures, such as, for example, propylene glycol based wing deicers thickened with polyacrylic acids.

US Patent:

20210367979, Nov 25, 2021

Filed:

May 19, 2020

Appl. No.:

16/878124

Inventors:

- Austin TX, US
David Coffey - Austin TX, US
Andrew Mortensen - Ann Arbor MI, US

International Classification:

H04L 29/06
G06N 5/02
H04L 12/813
G06F 3/0482

Abstract:

A system, method, and computer-readable medium are disclosed for implementing a cybersecurity system having security policy visualization. At least one embodiment is directed to a computer-implemented method for implementing security policies in a secured network, including: retrieving a set of rules of a security policy; analyzing the set of rules of the security policy using one or more Satisfiability Modulo Theory (SMT) operations to reduce a dimensionality of the security policy; and generating a visual presentation on a user interface using results of the SMT operations, where the visual presentation includes visual indicia representing one or more targeted policy dimensions with respect to one or more fixed policy dimensions. In at least one embodiment, two or more security policies are presented with visual indicia representing differences between the security policies, including representations of one or more targeted policy dimensions with respect to one or more fixed policy dimensions.

US Patent:

20210344667, Nov 4, 2021

Filed:

May 1, 2020

Appl. No.:

16/865176

Inventors:

- Austin TX, US
David Coffey - Austin TX, US

International Classification:

H04L 29/06

Abstract:

A system, method, and computer-readable medium are disclosed for implementing a cybersecurity system having a digital certificate reputation system. At least one embodiment is directed to a computer-implemented method executing operations including receiving a communication having an internet protocol (IP) address and a digital certificate at a device within the secured network; determining whether the IP address is identified as having a high-security risk level; if the IP address has a high-security risk level, assigning a security risk level to the digital certificate based on the security risk level of the IP address; and using the security risk level for the digital certificate in executing the one or more security policies. Other embodiments include corresponding computer systems, apparatus, and computer programs recorded on one or more computer storage devices.

US Patent:

20210297437, Sep 23, 2021

Filed:

Mar 23, 2020

Appl. No.:

16/826674

Inventors:

- Austin TX, US
David Coffey - Austin TX, US

International Classification:

H04L 29/06

Abstract:

A system, method, and computer-readable medium are disclosed for implementing a security analytics system configured to instantiate user behavior baselines using historical data stored on an endpoint device. At least one embodiment is directed to a computer-implemented method including: accessing historical data stored on an endpoint device during an initialization of the endpoint device on the secured network, instantiating user behavior baselines for the endpoint device using the accessed historical data, and storing the instantiated user behavior baselines on a security system of the secured network for detecting instances of anomalous user behavior occurring at the endpoint device. Other embodiments of this aspect include corresponding computer systems, apparatus, and computer programs recorded on one or more computer storage devices, each configured to perform the actions of the methods.

US Patent:

20210152569, May 20, 2021

Filed:

Dec 31, 2020

Appl. No.:

17/139055

Inventors:

- Austin TX, US
Assaf Almaz - Ra'anana, IL
David Coffey - Austin TX, US
Ofir Arkin - Tel Aviv, IL

International Classification:

H04L 29/06

Abstract:

A system, method, and computer-readable medium are disclosed for performing a security operation. The security operation includes monitoring a plurality of electronically-observable actions of a first entity, the plurality of electronically-observable actions of the first entity corresponding to a respective first plurality of events enacted by the first entity; monitoring a plurality of electronically-observable actions of a second entity, the plurality of electronically-observable actions of the second entity corresponding to a respective second plurality of events enacted by the second entity; determining whether a first event of the respective first plurality of events and a second event of the respective second plurality of events comprise an entity interaction between the first entity and the second entity; generating an entity interaction map, the entity interaction map providing a representation of the entity interaction between the first entity and the second entity; and, using the entity interaction map to perform a forensics analysis.