Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PERIOD INDICATOR
Document Type and Number:
Japanese Patent JP3045651
Kind Code:
B2
Abstract:

PURPOSE: To provide a period indicator capable of clearly and uniformly displaying symbol displays which ar different at both points of time for the initial and final stages of use.
CONSTITUTION: The period indicator A is provided with a sheet-shaped base plate material 2 which forms a part of indication base plate 1 containing liquid 5 and shows liquid permeability. On a surface of the base plate material 2, a first display layer 3 being a lower layer and a second display layer 4 being an upper layer and fully covering the layer 3 are formed. The first display layer 3 has liquid permeability and shows high reflectivity to light at the time of containing liquid and a planar form thereof forms a definite display symbol shape. The second display layer 4 has liquid permeability and shows low refractive index to light at the time of containing liquid and a planar form thereof forms a definite display symbol shape.


Inventors:
Okawa, Motohiro
Yamamoto, Mitsunobu
Application Number:
JP1995000139846
Publication Date:
May 29, 2000
Filing Date:
April 12, 1995
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MISHIMA SEISHI KK
International Classes:
G04F1/02; G09F3/02; (IPC1-7): G09F3/02; G04F1/02
Attorney, Agent or Firm:
倉内 義朗