4 Patents
#4 in St. Helens
#3,869 in United Kingdom
Pilkington Diffractive Lenses Limited
Forward Citations = 131
3 inventors:
3 inventors (with patents filed for the assignee):
Michael H Freeman (4 out of 15 patents)
Colin M Perrott (2 out of 4 patents)
William E Meyers (1 out of 5 patents)
4 patents:
#4 in St. Helens
#3,869 in United Kingdom
3 inventors:
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile