Average Co-Inventor Count = 3.62
ph-index = 3
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. Nu-kote International, Inc. (4 from 57 patents)
2. Pelikan, Inc. (3 from 23 patents)
3. Seiko Epson Corporation (2 from 33,464 patents)
9 patents:
1. 7213489 - Ink container opener with multiple inserts for different container types
2. 6923530 - Fused filter screen for use in ink jet cartridge and method of assembling same
3. 6846070 - Pressurized ink filling method for dual compartment ink-jet cartridge used in ink-jet printer
4. 6742880 - Dual chamber cartridge
5. 6742879 - Dual chamber ink-jet cartridge
6. 6682184 - Septum seal plug used in inkjet cartridge
7. 5254193 - Ribbon assembly fixture with integral instructions and method
8. 5193261 - Method for stuffing a snailed endless ribbon into a ribbon cartridge
9. 5136778 - Apparatus and method for stuffing a snailed endless ribbon into a ribbon