Inventor
David C. Lewis
Inventor
Conroe, TX, US
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds11%
C09KMaterials for miscellaneous applications, not provided for elsewhere11%
E21BEarth or rock drilling11%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds9%
C11DDetergent compositions9%
C10LFuels not otherwise provided for6%
A61KPreparations for medical, dental or toiletry purposes4%
A61QSpecific use of cosmetics or similar toiletry preparations4%
B01FMixing, e.g. dissolving, emulsifying or dispersing4%
F02BInternal-combustion piston engines4%
PatentTitleYear
11,015,015Co-preparation of polyetheramines and alklyene amines202111,008,503Water-in-oil hydraulic fracturing fluid and method of using such202110,731,070Poly (vinyl carprolactam) kinetic gas hydrate inhibitor and method for preparing the same202010,695,727Fuel enrichment method and device202010,519,363Ultra-high salinity surfactant formulation201910,513,578Etheramines and their use as curatives or intermediates for polymer synthesis201910,016,731Fuel enrichment method and device20189,988,571Surfactant formulation for release of underground fossil fluids20189,822,215'Etheramines with enhanced thermal stability and their use as curatives or intermediates for polymer synthesis'20179,598,358'Acylalkylisethionate esters and applications in consumer products'20178,403,069'Oil recovery employing alkylene carbonates'20138,282,878'Sintering aids'20128,008,239'Acylalkylisethionate esters and applications in consumer products'20116,887,830'Surfactant adjuvants useful in herbicide compositions'20056,133,217'Solubilization of low 2-phenyl alkylbenzene sulfonates'20006,083,897'Solubilization of low 2-phenyl alkylbenzene sulfonates'2000Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2000–2005Patents assigned to HUNTSMAN SPEC CHEM CORP (3)· patent assignee history
2000–2017Based in Austin, TX, US· patent location history
2011–2021Patents assigned to HUNTSMAN PETROCHEMICAL LLC (9)· patent assignee history
2012–2017Patents assigned to LEWIS DAVID C (3)· patent assignee history
2012–2021Based in Conroe, TX, US· patent location history
2018–2020Patents assigned to ADVANCED FUEL TECH UK LIMITED (2)· patent assignee history
2018–2020Based in Gloucestershire, GB· patent location history
2020–2021Patents assigned to INDORAMA VENTURES OXIDES LLC (2)· patent assignee history
2021Based in The Woodlands, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HUNTSMAN PETROCHEMICAL LLC | 9 | 2011–2021 |
| HUNTSMAN SPEC CHEM CORP | 3 | 2000–2005 |
| LEWIS DAVID Cself | 3 | 2012–2017 |
| ADVANCED FUEL TECH UK LIMITED | 2 | 2018–2020 |
| INDORAMA VENTURES OXIDES LLC | 2 | 2020–2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Conroe, Texas, US | 8 | 2012–2021 |
| Austin, Texas, US | 5 | 2000–2017 |
| Gloucestershire, GB | 2 | 2018–2020 |
| The Woodlands, Texas, US | 1 | 2021 |