CTI inks are manufactured using good manufacturing practice (GMP) protocols for the manufacture of printing inks, and are approved for non-food-contact applications. CTI inks comply with the following requirements:
CTI inks are manufactured without the use of BPA, ITX, or benzophenone.
 
CTI holds the following US patents:
Patent Number
Patent Title
US 6,610,351
Raman-Active Taggants And Their Recognition
US 8,883,049
Small Scale Microencapsulated Pigments And Uses Thereof
US 8,921,264
Thermochromic Coloring Pad
US 9,085,192
Pressure Sensitive Coating For Image Forming
US 9,187,668
Photochromic Inks
US 9,175,175
Small Scale Microencapsulated Pigments And Uses Thereof
US 9,216,397
Stabilizing Additives For Thermochromic Pigments
US 9,345,270
Water-Activated Thermochromic Materials
US 9,399,716
Yellow Thermochromic Dyes, Inks Composition And Level Indicators
US 9,493,668
Reversible Thermochromic And Photochromic Ink Pens And Markers
D752,456
Thermochromic Efficiency Indicator