Inventor · disambiguated record
Robert Smith-Johannsen
Also filed as: SMITH-JOHANNSEN ROBERT
25 granted patents·1,078 citations·filing 1974–1989
97Inventor score
Top patents by PatentIndex Score
25 records- 0197US4534889APTC Compositions and devices comprising themRAYCHEM CORP·Filed 1983·Granted Aug 13, 1985·106 cites·43 claims
- 0297US4330703ALayered self-regulating heating articleRAYCHEM CORP·Filed 1979·Granted May 18, 1982·146 cites·51 claims
- 0397US4177376ALayered self-regulating heating articleRAYCHEM CORP·Filed 1975·Granted Dec 4, 1979·142 cites·46 claims
- 0496US4543474ALayered self-regulating heating articleRAYCHEM CORP·Filed 1982·Granted Sep 24, 1985·75 cites·47 claims
- 0596US3992558AProcess of coating particles of less than 20 microns with a polymer coatingRAYCHEM CORP·Filed 1974·Granted Nov 16, 1976·86 cites·13 claims
- 0694US4654511ALayered self-regulating heating articleRAYCHEM CORP·Filed 1985·Granted Mar 31, 1987·76 cites·15 claims
- 0794US4569920APreparation of inorganic particle slurriesBLASCH PRECISION CERAMICS INC·Filed 1983·Granted Feb 11, 1986·70 cites·20 claims
- 0888US5057674ASelf limiting electric heating element and method for making such an elementSMITH JOHANNSEN ENTERPRISES·Filed 1989·Granted Oct 15, 1991·63 cites·6 claims
- 0986US4286376AMethod of making heater cable of self-limiting conductive extrudatesRAYCHEM CORP·Filed 1978·Granted Sep 1, 1981·37 cites·7 claims
- 1084US4352694AProcess of producing sorel cementNORCEM AS·Filed 1980·Granted Oct 5, 1982·37 cites·5 claims
- 1182US4205994AExpansive cement and agent thereforRAYCHEM CORP·Filed 1978·Granted Jun 3, 1980·30 cites·39 claims
- 1281US4321295AModified graphite and process for using sameRAMU INT·Filed 1979·Granted Mar 23, 1982·25 cites·16 claims
- 1374US4428895AComposite inorganic structures and process of producing sameBLASCH PRECISION CERAMICS INC·Filed 1982·Granted Jan 31, 1984·29 cites·16 claims
- 1474US4209339ACement compositionsNORCEM AS·Filed 1978·Granted Jun 24, 1980·21 cites·22 claims
- 1572US4552800AComposite inorganic structuresBLASCH PRECISION CERAMICS INC·Filed 1983·Granted Nov 12, 1985·27 cites·6 claims
- 1669US4246209AFreezing inorganic particulate slurriesRAMU INT·Filed 1979·Granted Jan 20, 1981·18 cites·23 claims
- 1767US4820345AWater and fire resistant building materialNORSK PROCO AS·Filed 1987·Granted Apr 11, 1989·17 cites·33 claims
- 1866US4051075ACoated particles and conductive compositions therefromRAYCHEM CORP·Filed 1976·Granted Sep 27, 1977·17 cites·4 claims
- 1959US4592859AOil-in-water or water-in-oil suspensions and uses thereforRAMU INT·Filed 1984·Granted Jun 3, 1986·16 cites·19 claims
- 2054US4618369AOil-in-water suspensions as additives for cementsRAMU INT·Filed 1984·Granted Oct 21, 1986·12 cites·24 claims
- 2150US4540195ACross-country ski soleRAMU INT·Filed 1983·Granted Sep 10, 1985·10 cites·12 claims
- 2249US4369151AFreezing organic particulate slurriesRAMU INT·Filed 1980·Granted Jan 18, 1983·2 cites·12 claims
- 2347US4954695ASelf-limiting conductive extrudates and methods thereforRAYCHEM CORP·Filed 1988·Granted Sep 4, 1990·10 cites·18 claims
- 2442US4983342AMethod of making water and fire resistant building materialNORSK PROCO AS·Filed 1989·Granted Jan 8, 1991·6 cites·24 claims
- 2530US3947257ABenzotrifluoride fuel additive for internal combustion enginesRAYCHEM CORP·Filed 1974·Granted Mar 30, 1976·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →