Inventor
Douglas Dean Darling
Inventor
Portland, OR, US
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Jprimary
B41JTypewriters43%
F23DBurners10%
B28BShaping clay or other ceramic compositions3%
B28CPreparing clay3%
C04BLime, magnesia3%
E01FAdditional work, such as equipping roads or the construction of platforms, helicopter landing stages, signs, snow fences, or the like3%
F01DNon-positive displacement machines or engines, e.g. steam turbines3%
F02CGas-turbine plants3%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants3%
F23CMethods or apparatus for combustion using fluid fuel or solid fuel suspended in a carrier gas or air3%
PatentTitleYear
10,800,705Composition having plasma-treated recycled steel fibers202010,328,691Systems and methods for heating and measuring temperature of print head jet stacks201910,220,614Methods and systems for ejecting drops from inkjets following a period of latency201910,046,558Methods and systems for recovery of failed inkjets20189,975,330System and method for generation of non-firing electrical signals for operation of ejectors in inkjet printheads20189,931,840Systems and methods for heating and measuring temperature of print head jet stacks20189,849,689Water-vapor assist for filling aqueous print heads20179,016,816'System and method for per drop electrical signal waveform modulation for ink drop placement in inkjet printing'20159,004,661'Dual chamber reservoir print head'20158,746,827'Ink jet apparatus'20147,055,939'Drop generator'20067,021,733'Ink jet apparatus'20066,857,715'Ink jet apparatus'20056,739,690'Ink jet apparatus'20046,530,221'Modular resonators for suppressing combustion instabilities in gas turbine power plants'20035,983,622'Diffusion flame combustor with premixing fuel and steam method and system'19995,941,698'Gas pilot with radially displaced, high momentum fuel outlet, and method thereof'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2003Patents assigned to SIEMENS WESTINGHOUSE POWER (3)· patent assignee history
1999Based in Orlando, FL, US· patent location history
2003Based in Nashville, TN, US· patent location history
2004–2019Patents assigned to XEROX CORP (13)· patent assignee history
2004–2019Based in Portland, OR, US· patent location history
2014Patents assigned to DARLING DOUGLAS D (1)· patent assignee history
2020Patents assigned to DARLING DOUGLAS (1)· patent assignee history
2020Patents assigned to INTEGRATED COMPOSITE CONSTRUCTION SYSTEMS LLC (1)· patent assignee history
2020Based in Culpepper, VA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| XEROX CORP | 13 | 2004–2019 |
| SIEMENS WESTINGHOUSE POWER | 3 | 1999–2003 |
| DARLING DOUGLASself | 1 | 2020 |
| DARLING DOUGLAS Dself | 1 | 2014 |
| INTEGRATED COMPOSITE CONSTRUCTION SYSTEMS LLC | 1 | 2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Portland, OR, US | 13 | 2004–2019 |
| Orlando, Florida, US | 2 | 1999 |
| Culpepper, Virginia, US | 1 | 2020 |
| Nashville, TN, US | 1 | 2003 |