Average Co-Inventor Count = 1.85
ph-index = 4
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. Sumitomo Rubber Industries Limited (3 from 4,415 patents)
2. Other (2 from 832,718 patents)
3. Sumitomo Electric Industries, Limited (1 from 10,240 patents)
4. Nakata Zoki Co., Ltd (1 from 3 patents)
5 patents:
1. 7053760 - Apparatus and method for alarming decrease in tire air-pressure
2. 6407661 - Apparatus and method for alarming decrease in tire air-pressure
3. 6388568 - Apparatus and method for alarming decrease in tire air-pressure
4. 5216618 - Method and apparatus for taking out and storing articles
5. 4817697 - Apparatus for grooving tires