LexDanaLexDanabeta
Inventor

Doug Christian Greening

Inventor
Calgary, CA

Overview

11→
Patents
2007–2020
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 11 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary
E21BEarth or rock drilling53%
A47JKitchen equipment20%
B65BMachines, apparatus or devices for, or methods of, packaging articles or materials20%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure7%
PatentTitleYear
10,697,257Interlock system and method for a drilling rig202010,370,899Mud saver valve measurement system and method201910,174,570System and method for mud circulation20199,896,893'Pipe drive sealing system and method'20189,784,054'System and method for establishing tubular connections'20179,657,533'Drilling component retention system and method'20179,650,880'Waveform anti-stick slip system and method'20179,359,835'Pipe drive sealing system and method'20167,703,636'Frozen food dispensing device and method'20107,343,719'Automated food processing system and method'20087,303,776'Automated food processing system and method'2007

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2007–2010Patents assigned to RESTAURANT TECHNOLOGY (3)· patent assignee history
2007–2020Based in Calgary, CA· patent location history
2016–2018Patents assigned to TESCO CORP (5)· patent assignee history
2019–2020Patents assigned to NABORS DRILLING TECH USA INC (3)· patent assignee history
2019Patents assigned to NABROS DRILLING TECH USA INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TESCO CORP52016–2018
NABORS DRILLING TECH USA INC32019–2020
RESTAURANT TECHNOLOGY32007–2010
NABROS DRILLING TECH USA INC12019
Locations
LocationPatentsSpan
Calgary, CA112007–2020