Average Co-Inventor Count = 3.04
ph-index = 32
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. Certainteed Corporation (50 from 936 patents)
50 patents:
1. D949440 - Shingle
2. D855220 - Shingle
3. 9074373 - System, method and apparatus for adding thickness to roofing products
4. 8984835 - Laminated shingle with wider nailing zone
5. 8813453 - Laminated shingle with wider nailing zone
6. 8240100 - Laminated shingle with wider nailing zone
7. D611620 - Shingle
8. 7510622 - Method of making a shingle and shingle made thereby
9. D552267 - Shingle
10. 6715252 - Composite shingle having shading zones in different planes
11. 6523316 - Composite shingle having shading zones in different planes
12. 6467235 - Method and apparatus for making a thick-appearing shingle
13. 6305138 - Composite shingle having shading zones in different planes
14. 6212843 - Thick-appearing shingle and method and apparatus for making same
15. 6205734 - Shingle