Average Co-Inventor Count = 1.60
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. Esselte Pendaflex Corporation (5 from 118 patents)
2. Other (1 from 832,761 patents)
3. Letraset Corporation (1 from 5 patents)
4. Letraset International Limited (1 from 2 patents)
8 patents:
1. 4941520 - Formulating pasty materials
2. 4731149 - Apparatus for use in spacing letters
3. 4564414 - Magnetic devices, apparatus for use in connection with dry transfer
4. 4542039 - Production of colored legends
5. 4539759 - Apparatus for use with dry transfer lettering sheets
6. 4513511 - Layout boards
7. 4364184 - Indicia alignment device
8. 4232452 - Apparatus for use in connection with dry transfer lettering and