Mark A Johnston

US Patent:

8051289, Nov 1, 2011

Filed:

Oct 14, 2010

Appl. No.:

12/904289

Inventors:

Jay A. Johnson - Conifer CO, US
Mark A. Johnston - Castle Rock CO, US
Ronald M. Hyman - Hopedale MA, US
Chris M. Kaschmitter - Littleton CO, US

Assignee:

Avow Systems, Inc. - Denver CO

International Classification:

H04L 9/32

US Classification:

713175, 726 1, 726 27

Abstract:

In one embodiment, system to manage and delivery electronic documents is disclosed.

US Patent:

8617154, Dec 31, 2013

Filed:

Jun 25, 2010

Appl. No.:

12/823703

Inventors:

Mark A. Johnston - Boulder CO, US

Assignee:

Covidien LP - Mansfield MA

International Classification:

A61B 18/14

US Classification:

606 34, 606 32

Abstract:

An electrosurgical generator configured to output radio frequency (RF) energy having a current-source type behavior is provided. The generator has a buck converter having a voltage source, at least one switch and an inductor. The generator also has an RF stage configured to output the RF energy. A sensor circuit configured to measure at least one parameter of the RF energy and a controller configured to receive the measured parameter from the sensor circuit and control the output of the electrosurgical generator based on the measured parameter may also be provided in the electrosurgical generator.

US Patent:

20040008287, Jan 15, 2004

Filed:

Jul 10, 2002

Appl. No.:

10/193483

Inventors:

Shane Johnston - Rancho Santa Margarita CA, US
Mark Johnston - Rancho Santa Margarita CA, US
Camille Attell - Santa Ana CA, US

International Classification:

H04N005/44

US Classification:

348/734000

Abstract:

A television receiver uses a remote control device, as is well known. The television receiver receives and processes more than one channel of information simultaneously. The receiver is enabled for transmitting one channel of this information using wave energy. The remote and receiver communicate using this wave energy so that the remote can select which channel is to be displayed on the receiver, but also so that the remote is able to direct the receiver to transmit a second channel of information to the remote where it is displayed. Therefore, the remote is able to scan and review alternate channel choices while viewing a previously selected channel on the receiver. When an alternate channel is desired, the remote may then direct the receiver to change channels.

US Patent:

20100257367, Oct 7, 2010

Filed:

Jun 17, 2010

Appl. No.:

12/817702

Inventors:

Jay A. Johnson - Conifer CO, US
Mark R. Johnston - Castle Rock CO, US
Ronald M. Hyman - Hopedale MA, US
Chris M. Kaschmitter - Littleton CO, US

Assignee:

AVOW SYSTEMS, INC. - Denver CO

International Classification:

H04L 9/32
G06F 15/16

US Classification:

713175, 709206

Abstract:

In one embodiment, system to manage and delivery electronic documents is disclosed.

US Patent:

20120220997, Aug 30, 2012

Filed:

Feb 25, 2011

Appl. No.:

13/034822

Inventors:

Mark A. Johnston - Boulder CO, US

Assignee:

TYCO Healthcare Group LP - Boulder CO

International Classification:

A61B 18/12

US Classification:

606 40, 606 34

Abstract:

A method for suppressing arc formation during an electrosurgical tissue treatment procedure includes the steps of supplying pulsed current from an energy source to tissue and measuring the pulsed current supplied from the energy source. The method also includes the steps of comparing an instantaneous measured pulse to a predetermined threshold and controlling the pulsed current supplied from the energy source based on the comparison between the instantaneous measured pulse and the predetermined threshold.

US Patent:

20130053840, Feb 28, 2013

Filed:

Aug 30, 2011

Appl. No.:

13/221424

Inventors:

James E. Krapohl - Broomfield CO, US
Robert B. Smith - Loveland CO, US
Mark A. Johnston - Boulder CO, US

Assignee:

TYCO Healthcare Group LP - Boulder CO

International Classification:

A61B 18/18

US Classification:

606 33

Abstract:

A system and method for transmitting electrosurgical energy from a generator to an electrosurgical instrument are provided. The electrosurgical system includes a generator adapted to generate electrosurgical energy for treating tissue. The generator includes one or more active output terminals which supply energy to the tissue. The active output terminals are operatively connected to one or more active leads. The generator also includes one or more return output terminals which returns energy from the tissue. The return output terminals are operatively connected to at least one return lead. The system also includes an electrosurgical instrument operatively connected to the one or more active leads and one or more return electrodes operatively connected to one or more return leads. The system further includes an electrosurgical cable including one or more active leads and one or more return leads. The one or more active leads and one or more return leads are wound in a double helix fashion such that the electrical field along the cable is mitigated along the length thereof.

US Patent:

51204266, Jun 9, 1992

Filed:

Dec 21, 1990

Appl. No.:

7/631616

Inventors:

Mark R. Johnston - Westminster CA
Donald J. Gatza - Bellingham WA
Mark J. Woodward - Bellingham WA

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

C10G 4572
C10G 3700

US Classification:

208100

Abstract:

An improved hydrocracking process, in a process for conversion of components of a heavy hydrocarbon feed to lighter, more valuable products, wherein the feed comprises foulant, the process comprising: (a. ) contacting the feed with hydrogen, in the presence of a hydrocracking catalyst, at an elevated temperature and pressure in a hydrocracker, to produce a hydrocracker effluent comprising foulant; (b. ) cooling and depressurizing the hydrocracker effluent to form a cooled, depressurized hydrocracker effluent comprising foulant; (c. ) separating the cooled, depressurized hydrocracker effluent into the products of the conversion and an unconverted portion of the hydrocracker effluent which comprises foulant; and (d. ) recycling, as effluent recycle to the hydrocracker, the unconverted portion of the hydrocracker effluent to the hydrocracker, wherein the concentration of foulant in the hydrocracker effluent is increased; the improvement comprising: (i. ) partially cooling the hydrocracker effluent in a first cooler to a temperature at which the foulant remains soluble in the hydrocracker effluent to form a first cooled stream comprising unprecipitated foulant; (ii.

US Patent:

20230108257, Apr 6, 2023

Filed:

Jul 12, 2022

Appl. No.:

17/862541

Inventors:

- Mansfield MA, US
Mark A. Johnston - Boulder CO, US

International Classification:

A61B 18/12
A61B 18/14

Abstract:

An electrosurgical system includes an electrosurgical device including a pair of opposing jaw members movable between an open jaw position and a closed jaw position, a main switch, a button configured to actuate the main switch, and a secondary switch configured to actuate based on the thickness of the grasped tissue. The system also includes an electrosurgical generator coupled to the electrosurgical device, the electrosurgical generator is configured to generate an electrosurgical output in response to actuation of the main switch and the secondary switch.