Inventor
Darrin L. Willauer
Inventor
The Woodlands, TX, US
Overview
Patents· 23 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling25%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry6%
B82YSpecific uses or applications of nanostructures6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
B22FWorking metallic powder5%
H05KPrinted circuits5%
C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals3%
C01GCompounds containing metals not covered by subclasses c01d or c01f3%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds3%
C04BLime, magnesia3%
PatentTitleYear
10,233,726Pressure differential device with constant pressure drop20199,907,183'Electrical, plating and catalytic uses of metal nanomaterial compositions'20189,494,068'Electrical plating and catalytic uses of metal nanomaterial compositions'20168,857,454'Valving system and method of selectively halting injection of chemicals'20148,857,342'NANO-enhanced kinetic energy particles'20148,505,294'Method and system for control of hydraulic systems'20137,891,430'Water control device using electromagnetics'20117,832,490'Compositions containing shape-conforming materials and nanoparticles to enhance elastic modulus'20107,828,055'Apparatus and method for controlled deployment of shape-conforming materials'20107,820,097'Electrical, plating and catalytic uses of metal nanomaterial compositions'20107,743,835'Compositions containing shape-conforming materials and nanoparticles that absorb energy to heat the compositions'20107,565,928'Downhole abrading tool having a taggant injection assembly for indicating excessive wear'20096,896,056'System and methods for detecting casing collars'20056,600,127'Method and apparatus for direct electrothermal-physical conversion of ceramic into nanopowder'20036,580,051'Method and apparatus for producing bulk quantities of nano-sized materials by electrothermal gun synthesis'20036,540,019'Intelligent thru tubing bridge plug with downhole instrumentation'20036,367,545'Electronically controlled electric wireline setting tool'20026,289,994'Bidirectional temperature and pressure effect compensator for inflatable elements'20016,050,336'Method and apparatus to isolate a specific zone'20006,050,131'Method for verifying positive inflation of an inflatable element'20006,012,526'Method for sealing the junctions in multilateral wells'20005,743,333'External casing packer with element end sleeve to collar retainer and method'19985,350,018'Well treating system with pressure readout at surface and method'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994Based in Houston, TX, US· patent location history
1998–2014Patents assigned to BAKER HUGHES INC (15)· patent assignee history
1998–2019Based in The Woodlands, TX, US· patent location history
2003Patents assigned to NANOTECHNOLOGIES INC (2)· patent assignee history
2005–2018Based in Austin, TX, US· patent location history
2010–2018Patents assigned to NCC NANO LLC (3)· patent assignee history
2013–2019Patents assigned to WILLAUER DARRIN L (3)· patent assignee history
2013–2014Patents assigned to GOING WALTER S (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAKER HUGHES INC | 15 | 1998–2014 |
| NCC NANO LLC | 3 | 2010–2018 |
| WILLAUER DARRIN Lself | 3 | 2013–2019 |
| GOING WALTER S | 2 | 2013–2014 |
| NANOTECHNOLOGIES INC | 2 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| The Woodlands, Texas, US | 18 | 1998–2019 |
| Austin, Texas, US | 4 | 2005–2018 |
| Houston, Texas, US | 1 | 1994 |