US 12,064,989 B2
Writing instruments and associated methods
Bret Ryan Marschand, Glen Ellyn, IL (US); and Wing Sum Vincent Kwan, Chicago, IL (US)
Assigned to Sanford, L.P., Atlanta, GA (US)
Filed by Sanford, L.P., Atlanta, GA (US)
Filed on Aug. 10, 2021, as Appl. No. 17/398,712.
Application 17/398,712 is a continuation of application No. 16/647,928, granted, now 11,110,738, previously published as PCT/US2018/051869, filed on Sep. 20, 2018.
Claims priority of provisional application 62/563,134, filed on Sep. 26, 2017.
Prior Publication US 2021/0362533 A1, Nov. 25, 2021
Int. Cl. B43K 8/06 (2006.01); B43K 1/12 (2006.01); B43K 8/02 (2006.01); B43K 8/03 (2006.01)
CPC B43K 8/06 (2013.01) [B43K 1/12 (2013.01); B43K 8/022 (2013.01); B43K 8/03 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of making a nib for an ink-based writing instrument, comprising:
forming a nib material; and
cutting the nib material, via a blade, to form a nib having a nib tip;
wherein the nib material has a porosity of 0.5 to 0.65; and
wherein the nib has at least one channel positioned within and extending a length of the nib, the at least one channel having a diameter of from about 50 microns to about 150 microns.