Average Co-Inventor Count = 1.69
ph-index = 7
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 (8 from 832,718 patents)
2. Frede Hilmar Drostholm (1 from 2 patents)
9 patents:
1. 4164537 - Brick press and associated equipment for making bricks
2. 4082597 - Method and apparatus for making continuous lengths of resin tubes
3. 4081302 - Method for making tubular resin elements such as pipes
4. 4050865 - Brick press and associated equipment for making bricks
5. 4035128 - Brick press and associated equipment for making bricks
6. 4022669 - Equipment for cleaning solvents
7. 4011354 - Method and apparatus for making tubular resin elements such as pipes
8. 3979250 - Apparatus for making continuous lengths of resin tubes
9. 3943224 - Method and apparatus for making continuous lengths of resin tubes