Inventor
John G. Pendergast, Jr.
Inventor
Lake Jackson, TX, US
Overview
Patents· 21 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds31%
B01DSeparation19%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry15%
C07BGeneral methods of organic chemistry6%
Y02PClimate change mitigation technologies in the production or processing of goods6%
B03DFlotation4%
C07DHeterocyclic compounds4%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium4%
A01NPreservation of bodies of humans or animals or plants or parts thereof2%
B01LChemical or physical laboratory apparatus for general use2%
PatentTitleYear
10,920,013Alkoxylation process using tubular reactor202110,626,097Process for making hydroxyethyl piperazine compounds202010,392,337Process for purification of methyl methacrylate201910,329,399Process for purification of vent streams201910,144,698Breaking a methanol/methyl methacrylate azeotrope using pressure swing distillation201810,059,651Separation process20189,617,200'Process for preparation of tertiary alkyl primary amines'20179,504,933'Hydrocarbon feed flexible high pressure nitration plant design'20169,403,145'Organometallic compound preparation'20169,353,045'Process for preparing choline hydroxide from trimethylamine and ethylene oxide'20169,340,486'Process for nitroalkane recovery by aqueous phase recycle to nitration reactor'20169,192,877'Apparatus and process for using a nitroalkane as an entrainer for azeotropic removal of water from aqueous acid solution'20159,133,094'Apparatus and process for nitration selectivity flexibility enabled by azeotropic distillation'20159,006,475'Organometallic compound preparation'20159,000,243'Process for separating chlorinated methanes'20158,558,039'Hydrocarbon feed flexible high pressure nitration plant design'20138,431,754'Process for nitroalkane recovery by aqueous phase recycle to nitration reactor'20138,410,323'Process for downstream recovery of nitroalkane using dividing wall column'20138,129,436'Mixed alcohol synthesis with enhanced carbon value use'20128,123,843'Rich gas absorption apparatus and method'20125,233,060'Ethylene recovery in direct-oxidation ethylene oxide processes'1993Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993Based in Baton Rouge, LA, US· patent location history
2012–2021Patents assigned to DOW GLOBAL TECHNOLOGIES LLC (15)· patent assignee history
2012–2015Patents assigned to PENDERGAST JR JOHN G (8)· patent assignee history
2012–2016Based in Lake Jackson, TX, US· patent location history
2013–2016Patents assigned to ANGUS CHEMICAL (6)· patent assignee history
2013–2015Patents assigned to TRAUTH DANIEL M (5)· patent assignee history
2013–2015Patents assigned to SAWANT MAHESH (4)· patent assignee history
2017–2021Based in Pearland, TX, US· patent location history
2019Based in Freeport, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DOW GLOBAL TECHNOLOGIES LLC | 15 | 2012–2021 |
| PENDERGAST JR JOHN Gself | 8 | 2012–2015 |
| ANGUS CHEMICAL | 6 | 2013–2016 |
| TRAUTH DANIEL M | 5 | 2013–2015 |
| SAWANT MAHESH | 4 | 2013–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Lake Jackson, Texas, US | 13 | 2012–2016 |
| Pearland, Texas, US | 6 | 2017–2021 |
| Freeport, Texas, US | 1 | 2019 |
| Baton Rouge, LA, US | 1 | 1993 |