Writing system and ink pen having time-dependent...

Details Writing system and ink pen having time-dependent... Writing system and ink pen having time-dependent...

2007-08-14

2007-08-14

Walczak, David J. (Department: 3751)

Coating implements with material supply

Combined

C401S198000, C401S035000, C401S047000, C073S15000R, C116S206000

Reexamination Certificate

active

11164837

ABSTRACT:
A writing system for producing a writing having time-dependent characteristics includes: a pen including: a reservoir containing a fluid; and a writing tip configured to dispense the fluid to a writing surface, wherein the fluid includes a first chemical; and a writing surface including a second chemical chemically reactive with the first chemical, wherein the chemical reaction between the first and second chemicals has a known time dependence, and wherein an extent of chemical reaction between the first chemical and the second chemical is indicative of a time of dispensing of the fluid to the writing surface.

REFERENCES:
patent: 3979550 (1976-09-01), Panken
patent: 4139965 (1979-02-01), Curry et al.
patent: 5215956 (1993-06-01), Kawashima
patent: 5600443 (1997-02-01), Frey et al.

Affiliated with

Also associated with

Rating

Writing system and ink pen having time-dependent... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Writing system and ink pen having time-dependent..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Writing system and ink pen having time-dependent... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3899786