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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
QINGDAO EASTERN SEA OASIS SEAWATER TREATMENT TECHNOLOGY CO LTD	ROOM 240 BUILDING NO 1 HICREAT CENTER PHASE 1 OCEANTEC VALLEY ENTREPRENEURSHIP CENTER JIMO DISTRICT QINGDAO CITY SHANDONG PROVINCE 266200

International Classification(s)

• C01B:NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
• C01F:COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUM....
• C02F:TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE....
• C01D:COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, ....
• B01D:SEPARATION

• 2015 Application Filing Year
• C01B Class
• 1749 Applications Filed
• 1349 Patents Issued To-Date
• 77.13 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Cai, Panmin	Weifang, CN	1	7
# of filed Patents : 1 Total Citations : 7

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Patent Citation Ranking

• 7 Citation Count
• C01B Class

• 31.00 % this patent is cited more than
• 7 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
7.5 Year Payment	$3600.00	$1800.00	$900.00	Dec 5, 2025
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Dec 5, 2029

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
June 05, 2018	US,9988287,B2   US9988287B2	GRANTED PATENT AS SECOND PUBLICATION
June 01, 2017	US,20170152160,A1   US20170152160A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9988287

Process water for producing salt by means of strong brine concentration after sea water desalination by using a two-way circulation method and bromine extraction

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Abstract

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A process produces salt by way of strong brine concentration after sea water desalination by using a two-way circulation method and bromine extraction. The process includes the following steps: A, preparing fresh water and strong brine from sea water in a high-pressure reverse osmosis unit by using a reverse osmosis method, wherein the concentration of the prepared strong brine is 70000 to 80000 PPM; and B, performing fresh and concentrated separation on the strong brine with the concentration of 70000 to 80000 PPM in a two-way circulation manner by using a concentration difference method till the strong brine is crystallized.

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Description

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Claims

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Legal Events

 

• MAFP2021
• AS2018
• I2018
• STCF2018
• P2017
• AS2016
• F2015
• PD2014

Date	Code	Event	Description
Dec 01, 2021	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 4
Nov 28, 2018	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WEIFANG NORTHSEA OASIS SOLAR POWERED TECHNOLOGY CO., LTD.;REEL/FRAME:047669/0463 Owner name: QINGDAO EASTERN SEA OASIS SEAWATER TREATMENT TECHN Effective Date: Nov 28, 2018
Jun 05, 2018	I	Issuance
May 16, 2018	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Jun 01, 2017	P	Published
Sep 22, 2016	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CAI, PANMIN;REEL/FRAME:039843/0939 Owner name: WEIFANG NORTHSEA OASIS SOLAR POWERED TECHNOLOGY CO Effective Date: Sep 22, 2016
Jan 04, 2015	F	Filing
Jun 06, 2014	PD	Priority Date