Jason F Cooper

US Patent:

20080113349, May 15, 2008

Filed:

Nov 3, 2006

Appl. No.:

11/592117

Inventors:

Pranvera Ikonomi - Springfield VA, US
Jason Cooper - Fairfax VA, US
Greg Sykes - Fairfax VA, US
Yvonne Reid - Haymarket VA, US

International Classification:

C12Q 1/68
C07H 21/00
C12Q 1/00

US Classification:

435 6, 435 4, 536 2433

Abstract:

The present invention relates to a PCR (polymerase chain reaction) based assay that is useful for detecting, identifying, quantitating and analysis of a target nucleic acid (target nucleic acid hereinafter) in a sample. More specifically, the present invention relates to a PCR based assay that can improve accuracy in detecting, identifying, and quantitating contamination in mammalian cell lines using a PCR-based assay of nucleic acid oligonucleotides (oligoprobes) having a sequence expected to be complementary to a target nucleic acid sequence in a sample. More specifically, the sample may contain either cells or nucleic acid isolated from a cell line. The present invention also relates to a detection kit using the PCR-based assay. The invention also involves a method for using specifically produced nucleic acids complementary to specific sequences or populations of different sequences of the cytochrome c oxidase I (COI) and/or cytochrome b, to detect, identify, and quantify specific organisms, groups of organisms, groups of eukaryotic cells or viruses in cells.

US Patent:

20190280863, Sep 12, 2019

Filed:

Mar 6, 2019

Appl. No.:

16/294804

Inventors:

- Majuro, MH
Jason Alan Cooper - Chesapeake VA, US

International Classification:

H04L 9/08
H04L 9/06
H04L 9/30
G06F 7/08
H04L 9/32

Abstract:

Secret data is maintained as a plurality of secret shares distributed among a plurality of system nodes. When seeking to recover the secret data, a user node sends a request comprising a seed value to the system nodes. The user node receives, from each system node of at least a first subset of the plurality of nodes, a cryptographic hash value based on the seed value and information unique to the system node. The user node then generates an ordered listing of the first subset of the plurality of system nodes according to the corresponding plurality of cryptographic hash values. The user nodes selects a second subset of system nodes from the first subset based on the ordered listing. The user node then reconstructs the secret data based on the secret shares possessed by at least some of the second subset of the plurality of system nodes.