Inventor

Randall Wayne Stephens

Inventor

Perkasie, PA, US

Overview

1997–2018

Patent span

Chemistry

Primary field (CPC C)

Patents· 24 as inventor

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

C07Cprimary

C07CAcyclic or carbocyclic compounds37%

C07DHeterocyclic compounds23%

A01NPreservation of bodies of humans or animals or plants or parts thereof5%

C10GCracking hydrocarbon oils5%

C10LFuels not otherwise provided for5%

C10MLubricating compositions5%

G01NInvestigating or analysing materials by determining their chemical or physical properties5%

Y02PClimate change mitigation technologies in the production or processing of goods5%

Y10TTechnical subjects covered by former us classification5%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry2%

PatentTitleYear

10,098,341Freeze stable tetrakis(hydroxymethyl) phosphonium sulfate formulations2018 9,988,360Method for preparation of 2-methyl-1,2-benzisothiazolin-3-one2018 9,139,540'Method for preparation of 2-alkyl-1,2-benzisothiazolin-3-ones'2015 8,252,594'Chemical markers'2012 8,197,836'Solid microbicidal composition'2012 7,858,373'Chemical markers'2010 7,563,934'Preparation of MnB12H12'2009 6,953,540'Continuous process for the preparation of encapsulated cyclopropenes'2005 6,307,094'Process for substituted 3-hydroxybutyrate esters'2001 6,063,929'Method to prepare dihydrothiazoles'2000 5,977,368'Process to chloroketones using oxazolines'1999 5,969,200'Process for the manufacture of acetonylbenzamides'1999 5,959,114'Process to chloroketones using oxazolines'1999 5,945,565'Process for the manufacture of acetonylbenzamides'1999 5,942,621'Process to chloroketones using oxazolines'1999 5,936,096'Process to chloroketones using oxazolines'1999 5,932,738'Process to chloroketones using oxazolines'1999 5,925,763'Process to chloroketones using oxazolines'1999 5,922,916'Process to chloroketoamines using carbamates'1999 5,886,210'Method for preparing aromatic compounds'1999 5,874,466'Process for the manufacture of acetonylbenzamides'1999 5,859,254'Process to chloroketones using oxazolines'1999 5,783,736'Process for amines'1998 5,679,832'Method for making .alpha.,.beta.-unsaturated-.beta.-trifluoromethyl-carboxylates and related compounds'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2018Patents assigned to ROHM & HAAS (23)· patent assignee history

1997–2018Based in Perkasie, PA, US· patent location history

2012Patents assigned to STEPHENS RANDALL WAYNE (2)· patent assignee history

2012Patents assigned to BANAVALI RAJIV MANOHAR (1)· patent assignee history

2012Patents assigned to EL A MMA BEVERLY JEAN (1)· patent assignee history

2015Patents assigned to DOW GLOBAL TECHNOLOGIES LLC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ROHM & HAAS	23	1997–2018
STEPHENS RANDALL WAYNEself	2	2012
BANAVALI RAJIV MANOHAR	1	2012
DOW GLOBAL TECHNOLOGIES LLC	1	2015
EL A MMA BEVERLY JEAN	1	2012

Locations

Location	Patents	Span
Perkasie, Pennsylvania, US	24	1997–2018