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STONE & WEBSTER ENG CORP

Overview
  • Total Patents
    721
About

STONE & WEBSTER ENG CORP has a total of 721 patent applications. Its first patent ever was published in 1946. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets basic materials chemistry, chemical engineering and environmental technology are LUMMUS TECHNOLOGY INC, HYDROCARBON RESEARCH INC and LUMMUS CO.

Patent filings per year

Chart showing STONE & WEBSTER ENG CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Woebcke Herman N 85
#2 Johnson Axel R 77
#3 Gartside Robert J 69
#4 Norton Richard C 34
#5 Ross Joseph L 29
#6 Narayanan Swami 26
#7 Duncan Dennis A 21
#8 Barchas Richard 19
#9 Woebcke Herman Nicholas 19
#10 Garabedian George 18

Latest patents

Publication Filing date Title
MXPA02007325A Multi zone cracking furnace.
US6271433B1 Cat cracker gas plant process for increased olefins recovery
CA2321300A1 Spent caustic pretreatment and enhanced oxidation process
US6235961B1 Process for pretreating cracked gas before caustic tower treatment in ehtylene plants
CA2289852A1 Cracking furnace with radiant heating tubes
US6383455B1 Ceramic slot reactor for ethylene production
US6312652B1 Ceramic dip pipe and tube reactor for ethylene production
US5768913A Process based mixed refrigerants for ethylene plants
US5885422A Spent caustic (pre)treatment process
US5859304A Chemical absorption process for recovering olefins from cracked gases
US5981818A Integrated cracking and olefins derivative process utilizing dilute olefins
US5763715A Butadiene removal system for ethylene plants with front end hydrogenation systems
US5976355A Low residence time catalytic cracking process
US6267359B1 Advanced tray support system using orthogonal grillage
US5723040A Fluid catalytic cracking process and apparatus
US5662868A Short residence time cracking apparatus and process
CA2111018A1 Integrated mtbe process
US5427655A High capacity rapid quench boiler
US5523502A Flexible light olefins production
AU4871593A Pulsed air decoking