Inventor · disambiguated record
Umberto Zardi
Also filed as: LAGANA VINCENZO · ZARDI UMBERTO
51 granted patents·780 citations·filing 1970–2004
99Inventor score
Top patents by PatentIndex Score
51 records- 0196US4372920AAxial-radial reactor for heterogeneous synthesisAMMONIA CASALE SA·Filed 1980·Granted Feb 8, 1983·90 cites·23 claims
- 0291US4199537ALiquid distributor for thin-film, tube-bundle apparatusSNAM PROGETTI·Filed 1978·Granted Apr 22, 1980·49 cites·4 claims
- 0388US4405562AAxial-radial reactor for heterogeneous synthesisAMMONIA CASALE SA·Filed 1981·Granted Sep 20, 1983·71 cites·5 claims
- 0487US4314077AMethod for the production of urea and purification of waterSNAM PROGETTI·Filed 1980·Granted Feb 2, 1982·23 cites·2 claims
- 0586US4134939ALiquid distributor for thin-film, tube-bundle apparatusSNAM PROGETTI·Filed 1976·Granted Jan 16, 1979·36 cites·1 claims
- 0684US4769220AConverter for heterogeneous synthesis more particularly for ammonia, methanol and higher alcoholsAMMONIA CASALE SA·Filed 1986·Granted Sep 6, 1988·34 cites·5 claims
- 0784US4755362ASystem for reducing energy consumption improving reactors for heterogeneous catalytic synthesis and relative reactorsAMMONIA CASALE SA·Filed 1986·Granted Jul 5, 1988·33 cites·10 claims
- 0880US4613696AProcess for urea productionZARDI UMBERTO·Filed 1985·Granted Sep 23, 1986·19 cites·12 claims
- 0979US6696026B2Process for combined production of ammonia and ureaUREA CASALE·Filed 2001·Granted Feb 24, 2004·14 cites·17 claims
- 1078US6231827B1Process for combined production of ammonia and ureaUREA CASALE SA·Filed 1998·Granted May 15, 2001·15 cites·8 claims
- 1178US3984469AProcess for the production of ureaSNAM PROGETTI·Filed 1974·Granted Oct 5, 1976·11 cites·4 claims
- 1275US4670588AProcess for the production of ureaAMMONIA CASLE S A·Filed 1984·Granted Jun 2, 1987·14 cites·2 claims
- 1375US4210600AMethod for the preparation of urea with a high-yield reactorSNAM PROGETTI·Filed 1979·Granted Jul 1, 1980·19 cites·3 claims
- 1474US7279138B2Horizontal chemical reactor, in particular for methanol synthesisMETHANOL CASALE SA·Filed 2004·Granted Oct 9, 2007·18 cites·17 claims
- 1573US4952375ASystem for reducing energy consumption improving reactors for heterogeneous catalytic synthesis and related reactorsAMMONIA CASALE SA·Filed 1988·Granted Aug 28, 1990·19 cites·5 claims
- 1673US4904453ASystem for reducing energy consumption improving reactors for heterogeneous catalytic synthesis and relative reactorsAMMONIA CASALE SA·Filed 1988·Granted Feb 27, 1990·8 cites·11 claims
- 1773US4013718AIntegrated process for the production of ureaSNAM PROGETTI·Filed 1974·Granted Mar 22, 1977·13 cites·4 claims
- 1872US5660801AProcess and apparatus for the revamping of urea synthesis plants consisting of a stripper with ammoniaUREA CASALE SA·Filed 1995·Granted Aug 26, 1997·11 cites·3 claims
- 1971US4963338AProcess for heterogeneous synthesis and related reactorsAMMONIA CASALE SA·Filed 1988·Granted Oct 16, 1990·23 cites·5 claims
- 2069US4217114AProcess for recovering powders obtained from apparatuses used for treating liquid or solid materialsSNAM PROGETTI·Filed 1975·Granted Aug 12, 1980·12 cites·1 claims
- 2168US5585074AMethod and apparatus for in-situ modernization of a heterogeneous exothermic synthesis reactor, particularly of the so-called kellogg typeAMMONIA CASALE SA·Filed 1994·Granted Dec 17, 1996·17 cites·22 claims
- 2267US5130098ASystem to improve the efficiency of heterogeneous reactors for exothermic synthesis and more particularly for the reaction of ammoniaAMMONIA CASALE SA·Filed 1990·Granted Jul 14, 1992·9 cites·9 claims
- 2364US5756048AModernization of a reactorMETHANOL CASALE SA·Filed 1995·Granted May 26, 1998·25 cites·5 claims
- 2462US5276183AProcess and plant for the production of ureaUREA CASALE SA·Filed 1992·Granted Jan 4, 1994·7 cites·12 claims
- 2559US5380943AProcess and plant for the production of urea with differentiated yield reaction spacesUREA CASALE SA·Filed 1992·Granted Jan 10, 1995·6 cites·12 claims
- 2659US4092358AProcess for the production of urea having a low carbamate contentSNAM PROGETTI·Filed 1976·Granted May 30, 1978·5 cites·4 claims
- 2758US5254316AReactors for heterogeneous synthesisAMMONIA CASALE SA·Filed 1992·Granted Oct 19, 1993·18 cites·5 claims
- 2858US4859425ASystem for improve the mixing of reacted gases and quench gases in heterogeneous synthesis reactorsAMMONIA CASALE SA·Filed 1987·Granted Aug 22, 1989·10 cites·2 claims
- 2955US5779988AHeterogeneous synthesis method and apparatus including wall temperature protectionAMMONIA CASALE SA·Filed 1995·Granted Jul 14, 1998·11 cites·13 claims
- 3055US3954861AProcess for producing ureaSNAM PROGETTI·Filed 1974·Granted May 4, 1976·4 cites·5 claims
- 3154US4849206AProcess to obtain an optimal gas distribution in catalytic beds for heterogeneous reactions in gaseous phaseAMMONIA CASALE SA·Filed 1987·Granted Jul 18, 1989·8 cites·4 claims
- 3254US4327068AMethod and the reuse of sewage waters of the combined urea-ammonia installationsSNAM PROGETTI·Filed 1981·Granted Apr 27, 1982·9 cites·2 claims
- 3354US4082797AMethod for the condensation of carbammate in urea-synthesis installationsSNAM PROGETTI·Filed 1976·Granted Apr 4, 1978·10 cites·6 claims
- 3453US4946657ASystem to reduce energy consumption in heterogeneous synthesis reactors and related reactorsAMMONIA CASALE SA·Filed 1987·Granted Aug 7, 1990·8 cites·7 claims
- 3552US6342632B1Process and plant for the production of urea with high conversion yield and low energy consumptionUREA CASALE·Filed 1996·Granted Jan 29, 2002·9 cites·40 claims
- 3652US6150555AProcess for urea productionUREA CASALE SA·Filed 1995·Granted Nov 21, 2000·10 cites·8 claims
- 3752US5176800AProcess for the modernization of existing urea plants and a modernized urea plantAMMONIA CASALE SA·Filed 1990·Granted Jan 5, 1993·10 cites·7 claims
- 3850US5184386AMethod for retrofitting carbon monoxide conversion reactorsAMMONIA CASALE SA·Filed 1991·Granted Feb 9, 1993·12 cites·8 claims
- 3948US5171543AReactor for exothermic heterogeneous synthesis reactionsAMMONIA CASALE SA·Filed 1990·Granted Dec 15, 1992·11 cites·8 claims
- 4048US5135722AConverters for heterogeneous catalytic synthesis, particularly for ammonia and methanol, under pressureAMMONIA CASALE SA·Filed 1988·Granted Aug 4, 1992·7 cites·5 claims
- 4145US4137262AProcess for the production of ureaSNAM PROGETTI·Filed 1976·Granted Jan 30, 1979·6 cites·4 claims
- 4245US3936499AProcess for the production of prilled urea having a low biuret contentSNAM PROGETTI·Filed 1970·Granted Feb 3, 1976·4 cites·2 claims
- 4341US4883646ASystem and device to make catalytic basket wallsfor heterogeneous synthesis reactorsAMMONIA CASALE SA·Filed 1987·Granted Nov 28, 1989·6 cites·2 claims
- 4440US5006316AReactors for heterogeneous synthesisAMMONIA CASALE SA·Filed 1988·Granted Apr 9, 1991·6 cites·5 claims
- 4539US5951953AMixing assembly for gaseous flows at different temperatures, in particular for heterogeneous exothermic synthesis reactorsMETHANOL CASALE SA·Filed 1995·Granted Sep 14, 1999·5 cites·4 claims
- 4639US4935210ASystem for reducing energy consumption in multi-unit reactors for heterogeneous synthesis and related reactorsAMMONIA CASALE SA·Filed 1987·Granted Jun 19, 1990·6 cites·3 claims
- 4738US5882606AMethod of retrofitting a heterogeneous exothermic synthesis reactorAMMONIA CASALE SA·Filed 1996·Granted Mar 16, 1999·5 cites·6 claims
- 4836US5152977AProcess for exothermic heterogeneous synthesis with external recovery of heatAMMONIA CASALE SA·Filed 1991·Granted Oct 6, 1992·4 cites·1 claims
- 4931US6730278B2Process and plant for the production of urea with high conversion yield and low energy consumptionUREA CASALE·Filed 1999·Granted May 4, 2004·0 cites·9 claims
- 5031US6290920B1Mixing assembly for gaseous flows at different temperatures, in particular for heterogeneous exothermic synthesis reactorsMETHANOL CASALE SA·Filed 1999·Granted Sep 18, 2001·0 cites·11 claims
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