RH

Randall H. Helland

3M: 10 patents #1,587 of 11,543Top 15%
Eastman Kodak: 1 patents #4,972 of 8,114Top 65%
Overall (All Time): #425,678 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7169831 Pavement marking composition comprising ceramic fibers Eric E. Rice 2007-01-30
6329128 Stable antihalation materials for photographic and photothermographic elements Charles W. Gomez, William D. Ramsden 2001-12-11
5395747 Stabilized thermal-dye-bleach constructions William D. Ramsden, Roger A. Mader 1995-03-07
5384237 Quaternary-ammonium phenylsulfonylacetate thermal-dye-bleach agents Dian E. Stevenson, Mark P. Kirk, Sylvia A. Farnum, William C. Frank, Jonathan P. Kitchin +7 more 1995-01-24
5380635 Dihydroperimidine squarylium dyes as antihalation and acutance materials for photographic and photothermographic articles Charles W. Gomez, Lori S. Harring, William D. Ramsden, Tran Van Thien 1995-01-10
5324627 Tetra-alkylammonium phenylsulfonylacetate thermal-dye-bleach agents Dian E. Stevenson, Mark P. Kirk, Sylvia A. Farnum, William C. Frank, Jonathan P. Kitchin +7 more 1994-06-28
5314795 Thermal-dye-bleach construction comprising a polymethine dye and a thermal carbanion-generating agent Sylvia A. Farnum, Mark P. Kirk, Jonathan P. Kitchin, Roger A. Mader, Mark B. Mizen +6 more 1994-05-24
5266452 Photographic element containing a thermal dye bleach system Jonathan P. Kitchin, Mark P. Kirk, Dian E. Stevenson 1993-11-30
5258274 Thermal dye bleach construction sensitive to ultraviolet radiation George V. D. Tiers, Dian E. Stevenson 1993-11-02
5135842 Thermal dye bleach construction Jonathan P. Kitchin, Mark P. Kirk, Dian E. Stevenson 1992-08-04
4752559 Primer/antihalation coating for photothermographic constructions Gregory J. McCarney 1988-06-21
4681830 Fluorinated carbon-containing developer composition Craig Burton 1987-07-21