Jonathan E Mitchell

US Patent:

59424621, Aug 24, 1999

Filed:

Oct 20, 1997

Appl. No.:

8/796726

Inventors:

Jonathan P. Mitchell - Hastings on Hudson NY
Michael E. Villafane - White Plains NY

Assignee:

Akzo Nobel N.V.

International Classification:

B01J 3100
C07F 1100

US Classification:

502155

Abstract:

A Group 6 metal-containing, ligand-containing olefin polymerization catalyst component can be made by using an unsolvated Group 6 metal trihalide as the starting reagent for the Group 6 metal which comprises contacting (e. g. , in tetrahydrofuran) the Group VIB metal trihalide, such as chromium trichloride, with a ligand reagent or reagents, such as a cyclopentadienyl-containing lithium compound and a lower alkyl-containing lithium compound, in the presence of a sigma donor ligand, such as pyridine.

US Patent:

20210351492, Nov 11, 2021

Filed:

Sep 10, 2019

Appl. No.:

17/273839

Inventors:

- Arlington VA, US
Allen Paul NICHOLS - Arlington VA, US
Jonathan F. MITCHELL - Arlington VA, US

International Classification:

H01Q 1/24
H01Q 1/00
H04B 1/00
H04B 1/04

Abstract:

A radio system can have an antenna interface unit (AIU), a processor controller unit (PCU), and an interface cable. The AIU can be coupled to one or more antennae and can be configured to receive signals and/or convert the signals to digital signals. The PCU can be coupled to the AIU. The PCU can be configured to receive the analog signals via the interface cable, which can be configured to convey signals according to Wi-Fi, Ethernet, and RF protocols. The interface cable can be configured to provide power from the PCU to the AIU. The PCU can include a contactor controller for protecting against reverse polarity DC power connection.

US Patent:

20200335852, Oct 22, 2020

Filed:

Jul 10, 2019

Appl. No.:

16/508212

Inventors:

- Arlington VA, US
Allen Paul Nichols - Arlington VA, US
Jonathan F. Mitchell - Arlington VA, US

International Classification:

H01Q 1/24
H01Q 1/00
H04B 1/00
H04B 1/04

Abstract:

A radio system can have an antenna interface unit (AIU), a processor controller unit (PCU), and an interface cable. The AIU can be coupled to one or more antennae and can be configured to receive signals and/or convert the signals to digital signals. The PCU can be coupled to the AIU. The PCU can be configured to receive the analog signals via the interface cable, which can be configured to convey signals according to Wi-Fi, Ethernet, and RF protocols. The interface cable can be configured to provide power from the PCU to the AIU. The PCU can include a contactor controller for protecting against reverse polarity DC power connection.