Assignee
STONE & WEBSTER ENG CORP
118 granted patents·4,335 citations·filing 1972–1999
Top patents by PatentIndex Score
118 records- 0198US4264432APre-heat vaporization systemSTONE & WEBSTER ENG CORP·Filed 1979·Granted Apr 28, 1981·90 cites·7 claims
- 0296US5254788AProcess for the production of olefins from light paraffinsSTONE & WEBSTER ENG CORP·Filed 1991·Granted Oct 19, 1993·71 cites·39 claims
- 0396US4615795AIntegrated heavy oil pyrolysis processSTONE & WEBSTER ENG CORP·Filed 1984·Granted Oct 7, 1986·91 cites·25 claims
- 0495US5523502AFlexible light olefins productionSTONE & WEBSTER ENG CORP·Filed 1993·Granted Jun 4, 1996·157 cites·47 claims
- 0595US4300998APre-heat vaporization systemSTONE & WEBSTER ENG CORP·Filed 1980·Granted Nov 17, 1981·72 cites·4 claims
- 0694US4904455AProduction of synthesis gas using convective reformingSTONE & WEBSTER ENG CORP·Filed 1987·Granted Feb 27, 1990·116 cites·7 claims
- 0793US5280756ANOx Emissions advisor and automation systemSTONE & WEBSTER ENG CORP·Filed 1993·Granted Jan 25, 1994·95 cites·15 claims
- 0893US4814067AParticulate solids cracking apparatus and processSTONE & WEBSTER ENG CORP·Filed 1987·Granted Mar 21, 1989·68 cites·17 claims
- 0992US5320741ACombination process for the pretreatment and hydroconversion of heavy residual oilsSTONE & WEBSTER ENG CORP·Filed 1992·Granted Jun 14, 1994·106 cites·22 claims
- 1092US4732740AIntegrated heavy oil pyrolysis processSTONE & WEBSTER ENG CORP·Filed 1984·Granted Mar 22, 1988·79 cites·1 claims
- 1191US4141825ADesalination process system and by-product recoverySTONE & WEBSTER ENG CORP·Filed 1977·Granted Feb 27, 1979·107 cites·4 claims
- 1291US4083781ADesalination process system and by-product recoverySTONE & WEBSTER ENG CORP·Filed 1976·Granted Apr 11, 1978·122 cites·4 claims
- 1390US5730859AProcess for catalytically cracking paraffin rich feedstocks comprising high and low concarbon componentsSTONE & WEBSTER ENG CORP·Filed 1996·Granted Mar 24, 1998·74 cites·2 claims
- 1490US4356151ASolids quench boilerSTONE & WEBSTER ENG CORP·Filed 1980·Granted Oct 26, 1982·52 cites·6 claims
- 1589US5220093AProcess for production of olefins from mixtures of light paraffinsSTONE & WEBSTER ENG CORP·Filed 1992·Granted Jun 15, 1993·32 cites·16 claims
- 1689US4552644ADuocracking process for the production of olefins from both heavy and light hydrocarbonsSTONE & WEBSTER ENG CORP·Filed 1984·Granted Nov 12, 1985·48 cites·1 claims
- 1789US3959420ADirect quench apparatusSTONE & WEBSTER ENG CORP·Filed 1972·Granted May 25, 1976·193 cites·12 claims
- 1888US5414170AMixed phase front end C2 acetylene hydrogenationSTONE & WEBSTER ENG CORP·Filed 1993·Granted May 9, 1995·87 cites·16 claims
- 1988US5009769AProcess for catalytic cracking of hydrocarbonsSTONE & WEBSTER ENG CORP·Filed 1990·Granted Apr 23, 1991·77 cites·5 claims
- 2088US5006131AApparatus for production of synthesis gas using convective reformingSTONE & WEBSTER ENG CORP·Filed 1988·Granted Apr 9, 1991·58 cites·1 claims
- 2188US4191845AProcess for converting unsaturated C4 hydrocarbons into normal butaneSTONE & WEBSTER ENG CORP·Filed 1978·Granted Mar 4, 1980·27 cites·36 claims
- 2288US4094148AThermal storage with molten salt for peaking powerSTONE & WEBSTER ENG CORP·Filed 1977·Granted Jun 13, 1978·140 cites·13 claims
- 2386US5181482ASootblowing advisor and automation systemSTONE & WEBSTER ENG CORP·Filed 1991·Granted Jan 26, 1993·83 cites·19 claims
- 2486US5181937AApparatus for production of synthesis gas using convective reformingSTONE & WEBSTER ENG CORP·Filed 1991·Granted Jan 26, 1993·56 cites·7 claims
- 2585US5981818AIntegrated cracking and olefins derivative process utilizing dilute olefinsSTONE & WEBSTER ENG CORP·Filed 1996·Granted Nov 9, 1999·148 cites·24 claims
- 2685US5087349AProcess for selectively maximizing product production in fluidized catalytic cracking of hydrocarbonsSTONE & WEBSTER ENG CORP·Filed 1990·Granted Feb 11, 1992·64 cites·13 claims
- 2785US5035732ACryogenic separation of gaseous mixturesSTONE & WEBSTER ENG CORP·Filed 1990·Granted Jul 30, 1991·59 cites·44 claims
- 2885US4765948ACoolant circulation system for a liquid metal nuclear reactorSTONE & WEBSTER ENG CORP·Filed 1986·Granted Aug 23, 1988·59 cites·22 claims
- 2984US5167795AProcess for the production of olefins and aromaticsSTONE & WEBSTER ENG CORP·Filed 1991·Granted Dec 1, 1992·45 cites·14 claims
- 3084US4986956APassive nuclear power plant containment systemSTONE & WEBSTER ENG CORP·Filed 1989·Granted Jan 22, 1991·50 cites·11 claims
- 3184US4203742AProcess for the recovery of ethane and heavier hydrocarbon components from methane-rich gasesSTONE & WEBSTER ENG CORP·Filed 1978·Granted May 20, 1980·51 cites·18 claims
- 3283US4737337ANuclear reactor having double tube helical coil heat exchangerSTONE & WEBSTER ENG CORP·Filed 1986·Granted Apr 12, 1988·44 cites·13 claims
- 3383US4351275ASolids quench boiler and processSTONE & WEBSTER ENG CORP·Filed 1979·Granted Sep 28, 1982·28 cites·14 claims
- 3483US4257171AFluidized bed gas distributor systemSTONE & WEBSTER ENG CORP·Filed 1979·Granted Mar 24, 1981·33 cites·23 claims
- 3582US3958951AConvective power reformer equipment and systemSTONE & WEBSTER ENG CORP·Filed 1974·Granted May 25, 1976·42 cites·15 claims
- 3681US6271433B1Cat cracker gas plant process for increased olefins recoverySTONE & WEBSTER ENG CORP·Filed 1999·Granted Aug 7, 2001·59 cites·3 claims
- 3781US5268104AProcess for treating and regenerating spent causticSTONE & WEBSTER ENG CORP·Filed 1992·Granted Dec 7, 1993·60 cites·7 claims
- 3881US4824658AProduction of synthesis gas using convective reformingSTONE & WEBSTER ENG CORP·Filed 1986·Granted Apr 25, 1989·30 cites·5 claims
- 3981US4288235ALow residence time solid-gas separation device and systemSTONE & WEBSTER ENG CORP·Filed 1979·Granted Sep 8, 1981·34 cites·14 claims
- 4081US4081323ASubatmospheric double containment systemSTONE & WEBSTER ENG CORP·Filed 1975·Granted Mar 28, 1978·34 cites·14 claims
- 4180US5382707AIntegrated MTBE processSTONE & WEBSTER ENG CORP·Filed 1994·Granted Jan 17, 1995·26 cites·34 claims
- 4280US4348364AThermal regenerative cracking apparatus and separation system thereforSTONE & WEBSTER ENG CORP·Filed 1980·Granted Sep 7, 1982·29 cites·12 claims
- 4379US4492624ADuocracking process for the production of olefins from both heavy and light hydrocarbonsSTONE & WEBSTER ENG CORP·Filed 1982·Granted Jan 8, 1985·29 cites·6 claims
- 4479US4433984ALow residence time solid-gas separation device and systemSTONE & WEBSTER ENG CORP·Filed 1981·Granted Feb 28, 1984·37 cites·1 claims
- 4579US4143521AProcess for the production of ethyleneSTONE & WEBSTER ENG CORP·Filed 1977·Granted Mar 13, 1979·41 cites·18 claims
- 4676US5271827AProcess for pyrolysis of hydrocarbonsSTONE & WEBSTER ENG CORP·Filed 1992·Granted Dec 21, 1993·32 cites·10 claims
- 4776US5151158AThermal cracking furnaceSTONE & WEBSTER ENG CORP·Filed 1991·Granted Sep 29, 1992·43 cites·7 claims
- 4875US5147511AApparatus for pyrolysis of hydrocarbonsSTONE & WEBSTER ENG CORP·Filed 1990·Granted Sep 15, 1992·32 cites·12 claims
- 4975US5114682AApparatus for recovering heat energy from catalyst regenerator flue gasesSTONE & WEBSTER ENG CORP·Filed 1991·Granted May 19, 1992·40 cites·1 claims
- 5075US4919898AParticulate solids cracking apparatusSTONE & WEBSTER ENG CORP·Filed 1988·Granted Apr 24, 1990·29 cites·6 claims
Showing the top 50 of 118 patent records by PatentIndex Score.
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