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# c12) United States Patent 

# Laporte et al. 

# (54) METHOD FOR NOx UPTAKE USING A PARTICULATE EARTH ALKALI CARBONATE-COMPRISING MATERIAL AND/OR PARTICULATE EARTH ALKALI PHOSPHATE-COMPRISING MATERIAL 

(71) Applicant: Omya International AG, Oftringen (CH) 

(72) Inventors: Christophe Laporte, Romont (CH); Daniel Frey, Zofingen (CH); Kai Max Hettmann, Grenzach-Wyhlen (DE); Samuel Rentsch, Spiegel bei Bern (CH); Detlef Gysau, Full (CH); Patrick A. C. Gane, Rothrist (CH) 

(73) Assignee: Omya International AG, Oftringen (CH) 

( * ) Notice: Subject to any disclaimer, the term ofthis patent is extended or adjusted under 35 U.S.C. 154(b) by 32 days. 

(21) Appl. No.: 16/071,389 

(22) PCT Filed: Mar. 6, 2017 

(86) PCT No.: PCT /EP2017 /055178 § 371 (c)(l), (2) Date: Jul. 19, 2018 

(87) PCT Pub. No.: WO2017/153329 PCT Pub. Date: Sep. 14, 2017 

## (65) Prior Publication Data 

US 2020/0016531 Al Jan. 16, 2020 

(60) Provisional application No. 62/307,603, filed on Mar. 14, 2016. 

(51) Int. Cl. 

<img src='content_image/940252.jpg'>

(52) U.S. Cl. CPC .......... BOID 53/565 (2013.01); BOJJ 201043 (2013.01); BOJJ 201048 (2013.01); BOJJ 20/28059 (2013.01); BOJJ 20/28061 (2013.01); BOJJ 2013071 (2013.01); C02F 11281 (2013.01); BOID 2251/404 (2013.01); BOID 2251/604 (2013.01); BOID 2251/606 (2013.01); BOID 2251/61 (2013.01); BOID 2253/306 (2013.01); BOID 2257/402 (2013.01); BOID 2257/404 (2013.01); C02F 2101/163 (2013.01); C02F 2101/166 (2013.01) 

## Related U.S. Application Data 

<img src='content_image/940229.jpg'>

# (IO) Patent No.: US 10,717,042 B2 

# Jul. 21, 2020 (45) Date of Patent: 

(58) Field of Classification Search CPC .. BOID 53/56; BOID 53/565; BOID 53/9409; BOID 53/9413; BOID 2251/606; BOID 2251/61; BOID 2257/402; BOID 2257/404; BOU 20/043; BOU 20/048; BOU 2208/00805 See application file for complete search history. 

## (56) References Cited 

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## FOREIGN PATENT DOCUMENTS 

<img src='content_image/940258.jpg'>

The International Search Report dated Oct. 5, 2017 from PCT/ EP2017/055178. 

Primary Examiner - Timothy C Vanoy (74) Attorney, Agent, or Firm - Heslin Rothenberg Farley & Mesiti, P.C. 

## (57) ABSTRACT 

The present invention relates to a process for taking up one or more nitrogen oxide(s) from a gaseous and/or aerosol or liquid medium using at least one particulate earth alkali carbonate-comprising material and/or at least one particulate earth alkali phosphate-comprising material as well as an adsorbing material comprising said at least one particulate earth alkali carbonate-comprising material and/or at least one particulate earth alkali phosphate-comprising material. 

US010717042B2 

## U.S. PATENT DOCUMENTS 

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## OTHER PUBLICATIONS 

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## 20 Claims, 1 Drawing Sheet 

