• Orege North America Inc. • 100 Chamisa Road • Covington, GA 30016 • September 29, 2023
The City of South San Francisco-San Bruno Water Quality Control Plant c/o Brian Schumacker, Plant Superintendent
195 Belle Aire Road
South San Francisco, CA 94080
Re: Orege North America SLG® Sole Source Unique Product and Patents Dear Mr. Schumacker,
Orege North America, Inc is a wholly owned subsidiary of Orege SA, a French company, that specializes in the development of innovative and patented sludge conditioning equipment known as the SLG®. Orege North America is the only provider of SLG® in North America. As stated above the SLG® system is a patented technology that has no known competition in the municipal marketplace to enhance the dewaterability and physically alter the rheological properties of municipal sludge. The SLG® is unique because it transforms the sludge by using a combination of velocity, compressed air, patented and proprietary process piping, and pressure to alter the rheological properties of the sludge so that the existing dewatering system can be further optimized to achieve the cake dryness improvement required. The improved cake dryness equates to a reduction in the total wet tons of sludge disposed of and therefore a substantial annual reduction in the cost of sludge disposal for our clients.
Please refer to Schedule One (attached) for a list of patents covering the SLG® equipment and process.
Should you have any additional questions please do not hesitate to contact me.
Sincerely,
Eddie Johnson
CEO
Orege North America, Inc.
• Orege North America Inc. • 100 Chamisa Road • Covington, GA 30016 • SCHEDULE 1: LIST OF PATENT APPLICATIONS RELATING TO PHYSICOCHEMICAL SLUDGE PRETREATMENT 1/ PATENT: "SLG": METHOD FOR SEPARATING LIQUID FROM SUSPENDED
MATERIEL IN A SLUDGE AND DEVICE FOR SAME
GRANTED (FILING DATE / FILING REFERENCE NUMBER)
ARGENTINA (28/10/2011 / -), TURKEY (28/10/2011 / 13/5045).
PUBLISHED (PUBLICATION DATE / FILING REFERENCE NUMBER)
FRANCE (04/05/2012 / 41033), PCT (03/05/2012 / 41032), EURO/PCT (04/09/2013 / 41521), GERMANY (04/09/2013 / 41521), SPAIN (04/09/2013 / 41521), FRANCE (04/09/2013 / 41521), GREAT BRITAIN (04/09/2013 / 41521), GRECE (04/09/2013 / 41521), ITALY (04/09/2013 / 41521), ALBANIA (04/09/2013 / 41521), AUSTRIA (04/09/2013 / 41521), BULGARIA (04/09/2013 / 41521), CROATIE (04/09/2013 / 41521), CHYPRE (04/09/2013 / 41521), BELGIUM (04/09/2013 / 41521), DENMARK (04/09/2013 / 41521), ESTONIA (04/09/2013 / 41521), FINLAND (04/09/2013 / 41521), HUNGARY (04/09/2013 / 41521), IRELAND (04/09/2013 / 41521), SWEEDEN (04/09/2013 / 41521), ICELAND (04/09/2013 / 41521), LATVIA (04/09/2013 / 41521), LUXEMBURG (04/09/2013 / 41521), LITHUANIA (04/09/2013 / 41521), REPUBLIC OF MACEDONIA (04/09/2013 / 41521), NORWAY (04/09/2013 / 41521), MALTA (04/09/2013 / 41521), MONACO (04/09/2013 / 41521), NETHERLANDS (04/09/2013 / 41521), POLAND (04/09/2013 / 41521), PORTUGAL (04/09/2013 / 41521), CZECH REPUBLIC (04/09/2013 / 41521), ROMANIA (04/09/2013 / 41521), SERBIA (04/09/2013 / 41521), SLOVAKIA (04/09/2013 / 41521), TURKEY (04/09/2013 / 41521), SLOVENIA (04/09/2013 / 41521), SWITZERLAND (04/09/2013 / 41521), EURO/DIVISION (11/02/2015 / 42046), SOUTH AFRICA (22/10/2013 / 41569), CANADA (23/09/2015 / 42270), CHINA (18/09/2013 / 41535), CHILE (04/11/2013 / 41582), INDIA (21/11/2014 / 41964), USA (05/09/2013 / 41522), INDONESIA (20/02/2011 / 40594), JAPAN (07/11/2013 / 41585), NEW ZEALAND (26/03/2014 / 41724), MEXICO (12/09/2013 / 41529), HONG-KONG (13/06/2014 / 41803).
FILED PENDING EXAMINATION (FILING DATE / FILING REFERENCE
NUMBER)
AUSTRALIA (28/10/2011 / 2011322381), BAHREIN (28/10/2011 / BP46/2013), BRAZIL (28/10/2011 / BR112013010304-3), SOUTH KOREA (28/10/2011 / 10-2013-7012177), EURASIA (28/10/2011 / 201300407), UNITED ARAB EMIRATES (28/10/2011 / 474/2013), ISRAEL (28/10/2011 / 225998), MALAYSIA (28/10/2011 / PI2013001538), AFRICAN ORGANIZATION (28/10/2011 / 1201300175), QATAR (28/10/2011 / QA/201304/00069), SINGAPORE (28/10/2011 / 201303397-2), THAILAND (28/10/2011 / 1301002257), VIETNAM (28/10/2011 / 1-2013-01362).
2/ PATENT: "SLG bis": WATER CLARIFICATION METHOD AND DEVICE
GRANTED (FILING DATE / FILING REFERENCE NUMBER)
• Orege North America Inc. • 100 Chamisa Road • Covington, GA 30016 • ARGENTINA (28/10/2011 / -), SINGAPORE (28/10/2011 / 201303354-3).
PUBLISHED (PUBLICATION DATE / FILING REFERENCE NUMBER)
FRANCE (04/05/2012 / 41033), PCT (03/05/2012 / 41032), EURO/PCT (04/09/2013 / 41521), GERMANY (04/09/2013 / 41521), SPAIN (04/09/2013 / 41521), FRANCE (04/09/2013 / 41521), GREAT BRITAIN (04/09/2013 / 41521), GRECE (04/09/2013 / 41521), ITALY (04/09/2013 / 41521), ALBANIA (04/09/2013 / 41521), AUSTRIA (04/09/2013 / 41521), BULGARIA (04/09/2013 / 41521), CROATIE (04/09/2013 / 41521), CHYPRE (04/09/2013 / 41521), BELGIUM (04/09/2013 / 41521), DENMARK (04/09/2013 / 41521), ESTONIA (04/09/2013 / 41521), FINLAND (04/09/2013 / 41521), HUNGARY (04/09/2013 / 41521), IRELAND (04/09/2013 / 41521), SWEEDEN (04/09/2013 / 41521), ICELAND (04/09/2013 / 41521), LATVIA (04/09/2013 / 41521), LUXEMBURG (04/09/2013 / 41521), LITHUANIA (04/09/2013 / 41521), REPUBLIC OF MACEDONIA (04/09/2013 / 41521), NORWAY (04/09/2013 / 41521), MALTA (04/09/2013 / 41521), MONACO (04/09/2013 / 41521), NETHERLANDS (04/09/2013 / 41521), POLAND (04/09/2013 / 41521), PORTUGAL (04/09/2013 / 41521), CZECH REPUBLIC (04/09/2013 / 41521), ROMANIA (04/09/2013 / 41521), SERBIA (04/09/2013 / 41521), SLOVAKIA (04/09/2013 / 41521), TURKEY (04/09/2013 / 41521), SLOVENIA (04/09/2013 / 41521), SWITZERLAND (04/09/2013 / 41521), EURO/DIVISION (21/01/2015 / 42025), SOUTH AFRICA (31/10/2013 / 41578), CHINA (25/09/2013 / 41542), CHILE (27/09/2013 / 41544), INDIA (21/11/2014 / 41964), USA (29/08/2013 / 41515), JAPAN (07/11/2013 / 41585), NEW ZEALAND (26/03/2014 / 41724), MEXICO (12/09/2013 / 41529), HONG KONG (13/06/2014 / 41803).
FILED PENDING EXAMINATION (FILING DATE / FILING REFERENCE
NUMBER)
AUSTRALIA (28/10/2011 / 2011322382), BAHREIN (28/10/2011 / BP47/2013), BRAZIL (28/10/2011 / BR112013009994-1), CANADA (28/10/2011 / 2815958), SOUTH KOREA (28/10/2011 / 10-2013-7012175), EURASIA (28/10/2011 / 201300406), UNITED ARAB EMIRATES (28/10/2011 / 476/2013), INDONESIA (28/10/2011 / W-00201301770), ISRAEL (28/10/2011 / 225999), MALAYSIA (28/10/2011 / PI2013001537), AFRICAN ORGANIZATION (28/10/2011 / 1201300174), QATAR (28/10/2011 / QA/201304/00070), THAILAND (28/10/2011 / 1301002258), TURKEY (28/10/2011 / 13/5044), VIETNAM (28/10/2011 / 1-2013-01363).
3/ PATENT: "SLG HC": METHOD FOR RECOVERING HYDROCARBONS FROM
A SLUDGE AND DEVICE FOR SAME
GRANTED (FILING DATE / FILING REFERENCE NUMBER)
PUBLISHED (PUBLICATION DATE / FILING REFERENCE NUMBER)
FRANCE (08/11/2013 / 41586), PCT (07/11/2013 / 41585).
FILED PENDING EXAMINATION (FILING DATE / FILING REFERENCE
NUMBER)
4/ PATENT: "SLG PRESSURE": ROCESS AND DEVICE FOR TREATING LIQUID
SLUDGES, AND SLUDGE CAKES OBTAINED WITH SUCH A PROCESS
• Orege North America Inc. • 100 Chamisa Road • Covington, GA 30016 •
GRANTED (FILING DATE / FILING REFERENCE NUMBER)
LEBANON (26/11/2014 / 4223).
PUBLISHED (PUBLICATION DATE / FILING REFERENCE NUMBER)
FRANCE (29/05/2015 / 42153), PCT (04/06/2015 / 42159).
FILED PENDING EXAMINATION (FILING DATE / FILING REFERENCE
NUMBER)
ARGENTINA (26/11/2014 / P140104421), KUWEIT (27/11/2014 / PA162/2014), VENEZUELA (27/11/2014 / 2014-001392), PAKISTAN (22/05/2015 / 295/2015). 5/ PATENT: "SLG POROUS": METHOD FOR DEODERIZING SLUDGE AND
DEVICE FOR IMPLEMENTING SUCH A METHOD
GRANTED (FILING DATE / FILING REFERENCE NUMBER)
LEBANON (26/11/2014 / 4222).
PUBLISHED (PUBLICATION DATE / FILING REFERENCE NUMBER)
FRANCE (29/05/2015 / 42153), PCT (04/06/2015 / 42159).
FILED PENDING EXAMINATION (FILING DATE / FILING REFERENCE
NUMBER)
ARGENTINA (26/11/2014 / P140104422), KUWEIT (27/11/2014 / PA163/2014), VENEZUELA (27/11/2014 / 2014-001388), PAKISTAN (22/05/2015 / 293/2015). 6/ PATENT: "SLG SPEED": PROCESS AND DEVICE FOR TREATING LIQUID
SLUDGES AND SLUDGE CAKES OBTAINED WITH SUCH A PROCESS
GRANTED (FILING DATE / FILING REFERENCE NUMBER)
LEBANON (26/11/2014 / 4225).
PUBLISHED (PUBLICATION DATE / FILING REFERENCE NUMBER)
FRANCE (29/05/2015 / 42153), FRANCE (29/05/2015 / 42153), PCT (04/06/2015 / 42159).
FILED PENDING EXAMINATION (FILING DATE / FILING REFERENCE
NUMBER)
ARGENTINA (26/11/2014 / P140104424), KUWEIT (27/11/2014 / PA164/2014), VENEZUELA (27/11/2014 / 2014-001390), PAKISTAN (22/05/2015 / 294/2015). 7/ PATENT APPLICATION: "IMPROVED PURIFICATION": PROCESS FOR
RECIRCULATING PURIFIED WATER UPSTREAM OF AN AEROBIC
BIOLOGICAL TREATMENT BASIN, AFTER SEPARATION OF THE WATER
FROM THE BIOLOGICAL SLUDGE THAT HAS BEEN PRODUCED BY THIS BASIN AND THEN DECANTED. THIS SEPARATION OCCURS AFTER
FLOCCULATION OF AN AIR/SLUDGE EMULSION PRODUCED BY A
CONTINUOUS PROCESS ENABLING THE INTERACTION OF SLUDGE AND AIR
IN AN ENCLOSED SPACE ALTERNATING AT LEAST ONE SEQUENCE OF COMPRESSION/DEPRESSION. THE WATER HAS THE BENEFICIAL
CHARACTERISTICS OF A SUSPENDED MATTER CONTENT LESS THAN 100 MG/L AND A REDOX POTENTIAL GREATER THAN 100 MV.