Average Co-Inventor Count = 2.17
ph-index = 8
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Yamatoya Company Limited (15 from 19 patents)
2. Other (1 from 832,843 patents)
3. Tokai Shinei Electronics Inidustry Co., Ltd (1 from 1 patent)
4. Yamatoyo & Co., Ltd. (1 from 1 patent)
5. Yamotoya & Co., Ltd. (1 from 1 patent)
17 patents:
1. 9857687 - Method of manufacturing substrate and substrate and mask film
2. 6391473 - Cu plated ceramic substrate and a method of manufacturing the same
3. 5841897 - Method for the tonal control or adjustment of reproduced color image and
4. 5406394 - Color reproducing method used in an image data processing system
5. 5371616 - Tonal conversion method of a picture
6. 5357349 - Tonal conversion method for a picture
7. 5313310 - Tonal conversion method for pictures
8. 5286609 - Process for the formation of a negative resist pattern from a
9. 5212518 - Tonal conversion method for a faded color photographic original picture
10. 5134494 - Method for producing color and black plates in a multi-color plate
11. 5072305 - Picture producing apparatus using picture information values correlated
12. 5057931 - Tonal conversion method of pictures for producing reproduced pictures
13. 5014120 - Method for processing picture to be reproduced on color picture tube and
14. 4956718 - Tonal conversion method for pictures
15. 4924323 - Tonal conversion method for pictures