Patent ID: 11958006
Assignee: B.G. NEGEV TECHNOLOGIES AND APPLICATIONS LTD., AT BEN-GURION UNIVERSITY
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 10:
11. A method of making a filter comprising LIG, wherein the method comprises the steps of:
(a) exposing a first side of a sheet comprising a LIG precursor material to a first laser source, wherein
(i) the exposing on the first side results in formation of LIG on the first side of the sheet, and
(ii) the LIG is derived from the LIG precursor material;

(b) treating the second side of the sheet, wherein
(i) the second side of the sheet is on the opposite side of the first side of the sheet,
ii) the LIG on the first side of the sheet and the step of treating on the second side provide a porosity to the sheet such that the sheet is configured to allow a flow of air through the LIG from the first side to the second side,
(iii) at least some of the LIG precursor material on the first side of the sheet is not formed into LIG and is operable to support the LIG formed on the first side,
(iv) the LIG precursor material has a first pattern on the first side during the step of exposing the first side of the sheet comprising the LIG precursor material to the first laser source,
(v) the step of treating the second side comprises exposing the second side of the sheet to a second laser source to form LIG on the second side of the sheet,
(vi) the second laser source is the same or a different laser source than the first laser source,
(vii) the LIG precursor material has a second pattern on the second side during the step of exposing the second side of the sheet to the second laser source,
(viii) the first pattern is offset from the second pattern.