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Dialog "How Do I...?" - Patents

Find a Japanese Patent?

TOPIC: In this example, you will obtain a Japanese patent using the Kokai Japanese patent number 05-185241. Note that the “5” in the Kokai number stands for the Imperial Year, plus the six-digit publication number. Databases with Japanese patents include Derwent World Patents Index® (File 351, 352), JAPIO, (File 347) and INPADOC (File 345).

Different numbers are assigned to stages of the patent process in Japan.

  • The Western Year is assigned to the Application number, Unexamined published/“laid open” application number (Kokai), Examined published application number (Kokoku), Granted patent number (Toroku), Utility model application and Utility model patent.
  • The Japanese numbering system for the most part uses an annual series so each year begins with document number 1.
  • The year of the Emperor (Imperial Year) also makes a difference in the number used. The Imperial Year is used for Unexamined Published Applications (Kokai); the Western Year is used for applications

 

COMMAND SUMMARY

BEGIN 351
EXPAND pn=jp 5185241

SELECT E3
TYPE S1/3/1


HOW TO...



1. After entering BEGIN 351 to open Derwent World Patents Index for searching, EXPAND on the patent number (PN=), using the country code (JP) and Imperial Year.

Tip: To find an application number, convert the Imperial Year to the Western Year.

–Hirohito’s reign lasted 63 years (1926-1989) so to convert Emperor year + 25 = Western year (e.g., 61 + 25 = 1986).

–Akihito’s reign began in 1989 so to convert Emperor year + 88 =
Western year (e.g., 2 + 88 = 1990).

 

 

 

 

 

2. SELECT the E number (E3).


?b 351

[File 351] Derwent WPI 1963-2006/UD,UM &UP=200629
(c) 2006 Thomson Derwent. All rights reserved.


?e pn=jp 5185241

Ref   Items  Index-term
E1        1  PN=JP 5185239
E2        1  PN=JP 5185240
E3        1  PN=JP 5185241
E4        1  PN=JP 5185242
E5        1  PN=JP 5185243
E6        1  PN=JP 5185244
E7        1  PN=JP 5185245
E8        1  PN=JP 5185246
E9        1  PN=JP 5185247
E10       1  PN=JP 5185248
E11       1  PN=JP 5185249
E12       1  PN=JP 5185250
E13       1  PN=JP 5185251
E14       1  PN=JP 5185252
E15       1  PN=JP 5185253
E16       1  PN=JP 5185254
E17       1  PN=JP 5185255
E18       1  PN=JP 5185256
E19       1  PN=JP 5185257
E20       1  PN=JP 5185258
E21       1  PN=JP 5185259
E22       1  PN=JP 5185260
E23       1  PN=JP 5185261
E24       1  PN=JP 5185262
E25       1  PN=JP 5185263
          Enter PAGE for more

?s e3
S1          1   PN='JP 5185241'


3. TYPE out the record in Format 3 to see the record including the patent family.

 

 

 

 

 

Note the application number is listed with the two-digit Western year at the beginning.


 1/3/1  
Derwent WPI
(c) 2006 Thomson Derwent. All rights reserved.

009575813
WPI Acc No: 1993-269359/199334
XRAM Acc No: C93-119932
XRPX Acc No: N93-206994
  Superposition resistance welder - comprising carriage with
  drive, electrode rings with drive, sensor to detect carriage
transfer rate, sensor to detect peripheral rate of electrode rings, etc.
  NoAbstract

Patent Assignee: KAWASAKI STEEL CORP (KAWI  )
Number of Countries: 001  Number of Patents: 002
Patent Family:
Patent No     Kind   Date    Applicat No  Kind   Date     Week
JP 5185241     A   19930727 
JP 925784     A   19920116  199334  B
JP 2500002     B2  19960529  JP 925784     A   19920116  199626

Priority Applications (No Type Date): JP 925784 A 19920116
Patent Details:
Patent No  Kind Lan Pg   Main IPC    Filing Notes
JP 5185241   A      9 B23K-011/06
JP 2500002   B2     9 B23K-011/06  Previous Publ patent JP 5185241


Note: You can also search for the patent using the application number prefix (AN=), country code and number with the Western Year.


?e an=jp 925784

E1        1  AN=JP 9257831
E2        1  AN=JP 9257838
E3        1  AN=JP 925784
E4        1  AN=JP 9257840
E5        1  AN=JP 9257842
E6        1  AN=JP 9257844
E7        1  AN=JP 9257845
E8        1  AN=JP 9257846
E9        1  AN=JP 9257847
E10       1  AN=JP 9257848
E11       1  AN=JP 925785
E12       1  AN=JP 9257850
E13       1  AN=JP 9257851
E14       1  AN=JP 9257854
E15       1  AN=JP 9257855
E16       1  AN=JP 9257857
E17       1  AN=JP 9257858
E18       1  AN=JP 9257859
E19       1  AN=JP 925786
E20       1  AN=JP 9257863
E21       1  AN=JP 9257866
E22       1  AN=JP 9257868
E23       2  AN=JP 9257869
E24       1  AN=JP 925787
E25       1  AN=JP 9257870
          Enter PAGE for more

?s e3

S1          1   AN='JP 925784'

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Stock #: 54103; Last modified: 14 Sep 2011



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