Average Co-Inventor Count = 2.00
ph-index = 6
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. A. Y. Mcdonald Mfg. Co. (5 from 20 patents)
2. A. Y. Mcdonald Manufacturing Company (3 from 5 patents)
8 patents:
1. 5836340 - Auxiliary gas connection for meter sets
2. 5799687 - Security valve assembly
3. 5102098 - Tamperproof rotary valve
4. 5076541 - Tamperproof rotary valve
5. 4984767 - Tamperproof rotary valve
6. 4303833 - Natural energy operated pump system
7. 4218042 - Ball valve construction
8. 4131142 - Safety valve for fuel dispensers including vapor recovery systems