As adjectives the difference between nonproprietary and intangible
is that nonproprietary is lacking proprietary value; not private or privileged information while intangible is incapable of being perceived by the senses; incorporeal.
As a noun intangible is
anything intangible.
intangible
English
Adjective
(
en adjective)
incapable of being perceived by the senses; incorporeal
Antonyms
* tangible
Noun
(
en noun)
Anything intangible
(legal) Incorporeal property that is saleable though not material, such as bank deposits, stocks, bonds, and promissory notes