WK

William D. Kappele

HP HP: 8 patents #473 of 7,018Top 7%
LI Lexmark International: 6 patents #429 of 1,615Top 30%
Overall (All Time): #356,527 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6538049 Ink compositions Anna Marie Pearson 2003-03-25
6174357 Pigment-based ink compositions 2001-01-16
6063834 Wet-rub resistant ink compositions Anna Marie Pearson, Ajay Kanubhalsuthar 2000-05-16
5994427 High performance ink compositions with non-benzidine based colorants Anna Marie Pearson 1999-11-30
5925692 High performance ink compositions James Mrvos, Ajay Kanubhai Suthar 1999-07-20
5656071 Ink compositions Anna Marie Pearson 1997-08-12
5273573 Specific dye set for thermal ink-jet printing on paper 1993-12-28
5272491 Thermal ink jet print device having phase change cooling Stuart D. Asakawa, John A. Mohr, John L. Stoffel, Bruce E. Mueller, Gerold Firl 1993-12-21
5185034 Ink-jet inks with improved colors and plain paper capacity Steven L. Webb 1993-02-09
5145519 Specific dye set for thermal ink-jet printing 1992-09-08
5143547 Specific dye set for thermal ink-jet printing on plain and coated papers 1992-09-01
5069718 Potassium substituted inks for ink-jet printers 1991-12-03
4994110 Dyes containing lithium for ink-jet printing inks John L. Stoffel, Ronald A. Askeland 1991-02-19
4761180 Dyes containing tetramethylammonium cation for ink-jet printing inks Ronald A. Askeland, Norman E. Pawlowski, Jr., John L. Stoffel 1988-08-02