Average Co-Inventor Count = 1.47
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. Other (3 from 832,961 patents)
2. Englishtown, Inc. (2 from 2 patents)
7 patents:
1. 7144202 - Silt fence installation apparatus
2. 7058354 - Learning activity platform and method for teaching a foreign language over a network
3. 7044689 - Silt fence installation apparatus
4. 7031651 - System and method of matching teachers with students to facilitate conducting online private instruction over a global network
5. D504134 - Silt fence installing machine
6. D502470 - Silt fence installing machine
7. 6741833 - Learning activity platform and method for teaching a foreign language over a network