Compositions: coating or plastic – Coating or plastic compositions – Marking
Reexamination Certificate
2008-07-08
2008-07-08
Lorengo, Jerry (Department: 1793)
Compositions: coating or plastic
Coating or plastic compositions
Marking
C106S031580
Reexamination Certificate
active
07396397
ABSTRACT:
In order to obtain an ink for oil-based ballpoint pens and an oil-based ballpoint pen which are excellent in handwriting sharpness, handwriting dryness, handwriting and feeling of writing, an ink composition includes an oil-soluble dye, water, an organic solvent whose vapor pressure at 20° C. is 0.5 mmHg or more and which dissolves the water, and an organic solvent whose vapor pressure at 20° C. is 0.1 mmHg or less and which dissolves the organic solvent whose vapor pressure at 20° C. is 0.5 mmHg or more. A total of these three components is 20 to 75% by mass based on an entire mass of the ink composition. A content of the water is 3.0 to 15.0% by mass based on the entire mass of the ink composition. An ink viscosity at 20° C. is 100 to 5,000 mPa·s. The water and the other components are formulated, mixed and stirred to produce the ink. A ballpoint pen refill with low vapor permeability is used.
REFERENCES:
patent: A 2000-256605 (2000-09-01), None
patent: A 2001-311032 (2001-11-01), None
patent: A 2003-192975 (2003-07-01), None
Faison Gee Veronica
Kabushiki Kaisha Pilot Corporation
Lorengo Jerry
Oliff & Berridg,e PLC
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