Screen printing stencil
US5994033A · kind A · utility
2Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1999 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Jun 2, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A screen printing stencil made from a composition comprising polyhydroxy compounds having a plurality of 1,2- or 1,3-diol groups along a polymer backbone, the diol groups grafted thereto a compound of formula (I) (where A is an arylene or an alkylene group; X is an oxygen atom, a sulfur atom, a carbon-carbon bond, or a group of formula (a), (b) or (c); R is a hydrogen atom or a methyl group; R.sup.1 is a (C.sub.1 -C.sub.4) alkyl group; m is an integer of from 1 to 8; n is an integer of from 1 to 3; and p is 1 or 2); or an acetal of the polyhydroxy, compound with ethylene glycol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.