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INT HYDRON CORP

Overview
  • Total Patents
    32
About

INT HYDRON CORP has a total of 32 patent applications. Its first patent ever was published in 1983. It filed its patents most often in United States, Canada and Australia. Its main competitors in its focus markets machines, textiles and paper and optics are POLYMATIC INVESTMENT CORP NV, OLIVER TIRE & RUBBER CO and FISK RUBBER CO.

Patent filings per year

Chart showing INT HYDRON CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Rawlings David L 15
#2 Glick Robert E 6
#3 Jenkins Evan John 4
#4 Haardt Henry 4
#5 Magdon John 3
#6 Dillon Michael A 3
#7 Chang Robert 2
#8 Haller Michael W E 2
#9 Payne Kenneth R 2
#10 Schaffner Hans S 2

Latest patents

Publication Filing date Title
AU7700087A In situ base curve vertex detection and employment thereof in contact lens manufacture
CA1291300C Opaque tinting process
AU6542086A Process for tinting a hydrogel contact lens
AU6353186A Opaque tinting process
US4680149A Mold and method for spin casting a precisely configured article
US4634449A Opaque tinting process for contact lens
US4681295A Tricurve optical metal master mold and method of making
US4584148A Method for the precision trimming of the edge of a centrifugally cast lens
CA1236662A Device and method for centrifugally casting articles
AU2966384A Improvements relating to molding hydrosel contact lenses
US4534723A Cutting device for the precision trimming of the edge of a centrifugally cast lens
GB8329967D0 Colouring or tinting of contact lenses
CA1211906A Hydrophilic lens tinting and colouring apparatus
US4647261A Cutting device and method for the precision trimming of the edge of a cast lens
US4551086A Device for centrifugally casting articles
US4516924A Retaining means for device for centrifugally casting symmetrical or asymmetrical articles
US4468184A Gas feed means for use in centrifugal casting devices
US4517140A Device and method for centrifugally casting articles
US4517139A Device and method for centrifugally casting articles on a continuous basis
US4517138A Device and method for centrifugally casting articles