Trigger Warning: Some of this may be disturbing to some readers, discretion is advised

Last night, while reading patents, I realized there is another problem with assuming licensing will happen, IMHO. Even if some company wanted to license any of EEStor’ s dielectrics (which I’m sure they wouldn’t) they don’t need to. All 3 of their dielectric systems are covered by long expired patents.

Their miracle dielectric, which surprised the word by claiming no fall-off with field, wasn’t so. As admitted in the first patent: https://patentimages.storage.googleapis.com/f6/40/d0/068c5ebdd37425/US7033406.pdf

the dielectric formulation was taken from a Hanson patent: https://patentimages.storage.googleapis.com/bd/ca/52/ef2ae876bf99a3/US6078494.pdf

What CN did was make an aqueous process version, so it was paraelectric. Well, it only became apparent with the last test cycles the their CMBT is very sensitive to field, and lost most of its permittivity at only 1 v/um, nowhere near the 300 v/um they initially claimed.

The CMBT on copper foil is a non-starter. 3M and DuPont have that niche; embedded capacitors: https://view.officeapps.live.com/op/view.aspx?src=http%3A%2F%2Fmultimedia.3m.com%2Fmws%2Fmedia%2F626122O%2Fembedded-passives-become-mainstream-technology-joel-peiffer.doc

covered, both in technology and market. In the 20 years that they have been selling it, there equipment is likely paid off, so they can sell it a lot cheaper than a new entrant. In addition, there are two non-trivial considerations. Why would a top-tier capacitor company compete with a key vendor of theirs, and second, TTC does not have the sales and marketing channels. Discrete components are sold to OEM. Embedded capacitor layers are sold to circuit board manufacturers.


And the glass/CMBT is a joke, IMHO, as it’s an obsolete system, with a K of 900. Yes, it can use non-precious metal electrodes. For a few years now, nickel-electrodes have been used with a K of 2-3,000. And they are better, with proven reliability. Google “glass-ceramic dielectrics” and be amazed.