Assignee
EIGENMANN LUDWIG
38 granted patents·988 citations·filing 1973–1988
Top patents by PatentIndex Score
38 records- 0195US4376007AMachine for preparing road surfaces and forming traffic regulating lines thereonEIGENMANN LUDWIG·Filed 1981·Granted Mar 8, 1983·77 cites·6 claims
- 0294US4020211AAnti-skid and wear resistant road surface marking materialEIGENMANN LUDWIG·Filed 1973·Granted Apr 26, 1977·65 cites·16 claims
- 0393US3935365AAnti-skid and wear-resisting road marking tape materialEIGENMANN LUDWIG·Filed 1974·Granted Jan 27, 1976·68 cites·15 claims
- 0492US4069281APrefabricated roadway marking strip material and method for producing sameEIGENMANN LUDWIG·Filed 1975·Granted Jan 17, 1978·59 cites·2 claims
- 0589US4072403ARetro-reflecting assemblyEIGENMANN LUDWIG·Filed 1976·Granted Feb 7, 1978·44 cites·6 claims
- 0688US3996556ALight emitting marker for roadway pavements, for traffic safetyEIGENMANN LUDWIG·Filed 1974·Granted Dec 7, 1976·41 cites·6 claims
- 0787US4652172AMethod and equipment for improving horizontal marking stripsEIGENMANN LUDWIG·Filed 1986·Granted Mar 24, 1987·41 cites·3 claims
- 0886US4146635AAnti-skid, wear- and stress-resisting road marking tape materialEIGENMANN LUDWIG·Filed 1977·Granted Mar 27, 1979·39 cites·3 claims
- 0984US4469645AProduction of transparent globulesEIGENMANN LUDWIG·Filed 1982·Granted Sep 4, 1984·29 cites·3 claims
- 1084US4236950ARoad marking machine and methodEIGENMANN LUDWIG·Filed 1977·Granted Dec 2, 1980·34 cites·14 claims
- 1184US3958891AAggregate elements for improving anti-skid and visibility properties of traffic regulating markings on roadway pavementsEIGENMANN LUDWIG·Filed 1974·Granted May 25, 1976·40 cites·25 claims
- 1281US3964835ADevice for forming marking stripes on road surfacesEIGENMANN LUDWIG·Filed 1973·Granted Jun 22, 1976·38 cites·17 claims
- 1378US4685824ARoad marking provided with protruding elements capable of resisting to snow plowing implementsEIGENMANN LUDWIG·Filed 1985·Granted Aug 11, 1987·40 cites·7 claims
- 1477US4925335APrefabricated continuous roadmarking tape having optical and electromagnetic functionEIGENMANN LUDWIG·Filed 1988·Granted May 15, 1990·39 cites·7 claims
- 1572US4607978AMethod and equipment for improving horizontal marking stripsEIGENMANN LUDWIG·Filed 1983·Granted Aug 26, 1986·25 cites·9 claims
- 1672US4082587AMethod and devices for road surface markingEIGENMANN LUDWIG·Filed 1976·Granted Apr 4, 1978·26 cites·9 claims
- 1769US4129397ARoad surface marking prefabricated tape material, having retroreflective composite elements associated theretoEIGENMANN LUDWIG·Filed 1977·Granted Dec 12, 1978·19 cites·8 claims
- 1869US4129673ASnowplowing resisting road surface marking tape materialEIGENMANN LUDWIG·Filed 1977·Granted Dec 12, 1978·19 cites·11 claims
- 1968US4102718AMethod and devices for applying tape marking material on road surfacesEIGENMANN LUDWIG·Filed 1977·Granted Jul 25, 1978·23 cites·7 claims
- 2064US4461862ASelf extinguishing polymeric compositions, which upon contacting a flame provide a nondropping char-forming incandescent crust, and which do not produce flame neither toxic fumesEIGENMANN LUDWIG·Filed 1981·Granted Jul 24, 1984·13 cites·11 claims
- 2164US3964821AReflex reflecting system for road surface markingEIGENMANN LUDWIG·Filed 1973·Granted Jun 22, 1976·20 cites·14 claims
- 2263US4565467AMethod and apparatus for the continuous laying road marking strips onto roadway surfacesEIGENMANN LUDWIG·Filed 1983·Granted Jan 21, 1986·21 cites·11 claims
- 2359US3964820ARetro-reflecting element and methodEIGENMANN LUDWIG·Filed 1974·Granted Jun 22, 1976·16 cites·10 claims
- 2457US4369001AMethod for forming highly retro-reflecting roadway surface markingEIGENMANN LUDWIG·Filed 1981·Granted Jan 18, 1983·15 cites·8 claims
- 2556US4411553ARetro-reflecting globules for road surface markingEIGENMANN LUDWIG·Filed 1981·Granted Oct 25, 1983·15 cites·3 claims
- 2656US4322177AMethod and devices for forming highly retro-reflecting roadway surface markingEIGENMANN LUDWIG·Filed 1979·Granted Mar 30, 1982·13 cites·6 claims
- 2756US4288487AMethod of forming surface markings on roadway areas, and roadway areas produced therebyEIGENMANN LUDWIG·Filed 1979·Granted Sep 8, 1981·12 cites·16 claims
- 2855US4049337AReflex reflecting system for road surface markingEIGENMANN LUDWIG·Filed 1976·Granted Sep 20, 1977·13 cites·8 claims
- 2954US4148561AMethod for producing improved retroreflective system for sign surfaces, and improved systems produced therebyEIGENMANN LUDWIG·Filed 1977·Granted Apr 10, 1979·12 cites·9 claims
- 3050US4708518AMethod of adhering a prefabricated marking strip to a roadway surface without having to treat the roadway surface and self-adhesive sealing strip itselfEIGENMANN LUDWIG·Filed 1986·Granted Nov 24, 1987·15 cites·2 claims
- 3148US4012247AMethod and devices for road surface markingEIGENMANN LUDWIG·Filed 1976·Granted Mar 15, 1977·12 cites·18 claims
- 3248US4012114AHigh efficiency reflecting system, and methodEIGENMANN LUDWIG·Filed 1975·Granted Mar 15, 1977·10 cites·7 claims
- 3346US4071384AMethod and devices for road surface markingEIGENMANN LUDWIG·Filed 1976·Granted Jan 31, 1978·10 cites·10 claims
- 3443US4681480AMethod for forming roadway-marking means whereby individual retroreflecting elements are gathered and grouped togetherEIGENMANN LUDWIG·Filed 1986·Granted Jul 21, 1987·11 cites·2 claims
- 3543US3964559AApparatus for applying tape marking material on road surfacesEIGENMANN LUDWIG·Filed 1974·Granted Jun 22, 1976·6 cites·7 claims
- 3634US4108536ARetroreflective roadway surface marking tape materialEIGENMANN LUDWIG·Filed 1977·Granted Aug 22, 1978·4 cites·10 claims
- 3733US3981557ALight retroreflective system for sign surfacesEIGENMANN LUDWIG·Filed 1974·Granted Sep 21, 1976·4 cites·7 claims
- 3830US4416510ARetroreflective structure and method of manufacturing the sameEIGENMANN LUDWIG·Filed 1981·Granted Nov 22, 1983·0 cites·20 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →