IKAI; Takayuki

Patent Applications and Registrations

Patent applications and USPTO patent grants for IKAI; Takayuki.The latest application filed is for "oil-based ink composition for writing utensils, writing utensil using same, and airbrush unit using same".

Company Profile

1.7.9

IKAI; Takayuki - Shinagawa-ku Tokyo
Ikai; Takayuki - Yokohama JP
Ikai; Takayuki - Yokohama-shi JP
Ikai; Takayuki - Kanagawa JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Oil-based Ink Composition For Writing Utensils, Writing Utensil Using Same, And Airbrush Unit Using Same App 20220017760 - IKAI; Takayuki ; et al.	2022-01-20
Refill for writing implements and writing implements using the same Grant 11,135,868 - Ikai October 5, 2	2021-10-05
Writing Tool Provided With Refill App 20210178803 - IKAI; Takayuki ; et al.	2021-06-17
Writing tool refill and writing tool using same Grant 10,569,596 - Ikai , et al. Feb	2020-02-25
Refill For Writing Implements And Writing Implements Using The Same App 20190337323 - Ikai; Takayuki	2019-11-07
Writing Tool Refill And Writing Tool Using Same App 20180236807 - Ikai; Takayuki ; et al.	2018-08-23
Coloring Composition For Preventing See-through Of Cloth, Coloring Method Using The Coloring Composition And Cloth Whose Back Is Colored App 20100297901 - Ikai; Takayuki ; et al.	2010-11-25
Oil-based ink composition and uses thereof Grant 7,381,754 - Ichikawa , et al. June 3, 2	2008-06-03
Follower for non-aqueous ball point pen and non-aqueous ball point pen Grant 7,311,459 - Ikai , et al. December 25, 2	2007-12-25
Follower for non-aqueous ball point pen and non-aqueous ball point pen App 20070020031 - Ikai; Takayuki ; et al.	2007-01-25
Refill for oil-based ink ballpoint pen and oil-based ink ballpoint pen Grant 6,945,726 - Ichikawa , et al. September 20, 2	2005-09-20
Refill for oil-based ink ballpoint pen and oil-based ink ballpoint pen App 20050123341 - Ichikawa, Syuji ; et al.	2005-06-09
Oil-base ink composition, writing utensils and dyes to be used therein Grant 6,830,611 - Ichikawa , et al. December 14, 2	2004-12-14
Oil-based ink composition and uses thereof App 20030134937 - Ichikawa, Shuuji ; et al.	2003-07-17
Oil-base ink composition, writing utensils and dyes to be used therein App 20030075074 - Ichikawa, Shuuji ; et al.	2003-04-24
Ink for ball point pen Grant 5,942,027 - Ikai , et al. August 24, 1	1999-08-24

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