Craig S. Bartholomew

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Glen Ellyn, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Spherodized fluorescent beads for improved roadway pavement marker...
- Patent number 5,873,187
- Issue date Feb 23, 1999
- IIT Research Institute
- Edward M. Kozak
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Spherodized fluorescent beads for improved roadway pavement marker...
- Patent number 5,660,497
- Issue date Aug 26, 1997
- IIT Research Institute
- Edward M. Kozak
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Spherodized fluorescent beads for improved roadway pavement marker...
- Patent number 5,516,227
- Issue date May 14, 1996
- IIT Research Institute
- Edward M. Kozak
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Rugate optical filter systems
- Patent number 5,028,136
- Issue date Jul 2, 1991
- IIT Research Institute
- Narayan P. Murarka
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Rugate optical filter systems
- Patent number 4,837,044
- Issue date Jun 6, 1989
- ITT Research Institute
- Narayan P. Murarka
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR