US 9,469,747 C2 (12,396th)
Mineral wool insulation
Carl Hampson, St. Helens (GB); Gert Mueller, New Palestine, IN (US); and Charles Appley, Cumberland, IN (US)
Filed by Carl Hampson, St. Helens (GB); Gert Mueller, New Palestine, IN (US); and Charles Appley, Cumberland, IN (US)
Assigned to KNAUF INSULATION, INC., Shelbyville, IN (US)
Reexamination Request No. 90/014,828, Aug. 12, 2021.
Reexamination Certificate for Patent 9,469,747, issued Oct. 18, 2016, Appl. No. 12/671,922, Aug. 1, 2008.
Reexamination Certificate C1 9,469,747, issued Jun. 8, 2021.
PCT Filed Aug. 1, 2008, PCT No. PCT/EP2008/060178
§ 371(c)(1), (2), (4) Date Apr. 15, 2011,
PCT Pub. No. WO2009/019232, PCT Pub. Date Feb. 12, 2009.
Claims priority of application No. 0715100 (GB), filed on Aug. 3, 2007; application No. 0807777 (GB), filed on Apr. 29, 2008; and application No. 0810297 (GB), filed on Jun. 6, 2008.
This patent is subject to a terminal disclaimer.
Ex Parte Reexamination Certificate issued on Sep. 8, 2023.
Int. Cl. F16L 59/02 (2006.01); C03C 13/06 (2006.01); C03C 25/32 (2018.01); C03C 25/321 (2018.01); C03C 25/34 (2006.01); C08H 8/00 (2010.01); C08K 5/17 (2006.01); C08K 7/14 (2006.01); C08L 97/02 (2006.01); C08L 101/02 (2006.01); C09D 197/02 (2006.01); C09D 199/00 (2006.01); C09D 201/02 (2006.01); C09D 201/06 (2006.01); D04H 1/4209 (2012.01); D04H 1/64 (2012.01); E04B 1/76 (2006.01); C09K 3/00 (2006.01); C08L 99/00 (2006.01); C08L 101/06 (2006.01); D04H 1/4218 (2012.01)
CPC F16L 59/028 (2013.01) [C03C 13/06 (2013.01); C03C 25/32 (2013.01); C03C 25/321 (2013.01); C03C 25/34 (2013.01); C08H 8/00 (2013.01); C08K 5/175 (2013.01); C08K 7/14 (2013.01); C08L 97/02 (2013.01); C08L 99/00 (2013.01); C08L 101/025 (2013.01); C08L 101/06 (2013.01); C09D 197/02 (2013.01); C09D 199/00 (2013.01); C09D 201/025 (2013.01); C09D 201/06 (2013.01); C09K 3/00 (2013.01); D04H 1/4209 (2013.01); D04H 1/4218 (2013.01); D04H 1/64 (2013.01); E04B 1/7658 (2013.01); E04B 1/7662 (2013.01)]
OG exemplary drawing
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:
The patentability of claims 1, 4 and 35 is confirmed.
Claims 2-3, 5-34 and 36-51 were not reexamined.
1. A method of manufacturing a glass fibre thermal insulation product which comprises less than 99% by weight and more than 80% by weight glass fibres and has a density greater than 5 kg/m3 and less than 80 kg/m3, the method comprising sequentially:
forming glass fibres from a molten mineral mixture;
spraying a substantially formaldehyde-free binder solution onto the glass fibres;
collecting the glass fibres to which the binder solution has been applied to form a batt of glass fibres; and
curing the batt comprising the glass fibres and the binder by passing the batt through a curing oven so as to provide a batt of glass fibres held together by a cured, thermoset, substantially formaldehyde-free, nitrogenous polymer-containing binder,
wherein the binder solution consists essentially of (i) a carbohydrate reactant comprising a reducing sugar or a carbohydrate reactant that yields a reducing sugar in situ under thermal curing conditions and (ii) an acid precursor, in aqueous solution,
wherein the acid precursor provides (i) ionic species selected from the group consisting of sulphates, phosphates, nitrates and combinations thereof and ii) an amine or amine reactant.