Composition of a magnesium sulfate/urea compound
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United States of America Patent
Stats
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May 30, 2017
Grant Date -
Dec 11, 2014
app pub date -
Dec 28, 2012
filing date -
Dec 30, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The subject of the invention is a composition containing at least 80 wt. %, with reference to the total weight of the composition, of a magnesium-sulfate-urea compound of Formula (I):
in which m is in the range from 0.9 to 1.1 and n is in the range from 2.1 to 3.1, where the composition, with reference to the total weight of the composition, contains less than 10 wt. % free MgSO4 in the form of the anhydrate or in the form of urea-free hydrates of the magnesium sulfate, such as magnesium sulfate or magnesium-sulfate hexahydrate and/or less than 10 wt. % uncombined urea. In particular, m in Formula (I) indicates the value 1. In particular, n in Formula (I) indicates the value 3.
First Claim
all claims..Other Claims data not available
Family
Country | kind | publication No. | Filing Date | Type | Sub-Type |
---|---|---|---|---|---|
WO | A1 | WO2013098367 | Dec 28, 2012 | Patent | Application |
Type : Patent Sub-Type : Application | |||||
INTERNATIONAL APPLICATION PUBLISHED WITH INTERNATIONAL SEARCH REPORT | ZUSAMMENSETZUNG EINER MAGNESIUMSULFAT-HARNSTOFF-VERBINDUNG | Jul 04, 2013 | |||
EP | B1 | EP2797854 | Dec 28, 2012 | Patent | Grant |
Type : Patent Sub-Type : Grant | |||||
Patent | ZUSAMMENSETZUNG EINER MAGNESIUMSULFAT-HARNSTOFF-VERBINDUNG | Apr 19, 2017 |
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
K+S MINERALS AND AGRICULTURE GMBH | BERTHA-VON-SUTTNER-STR 7 KASSEL 34131 |
International Classification(s)

- 2012 Application Filing Year
- C05D Class
- 46 Applications Filed
- 38 Patents Issued To-Date
- 82.61 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Kleine-Kleffmann, Ulrich | Bad Hersfeld, DE | 8 | 66 |
# of filed Patents : 8 Total Citations : 66 | |||
Walczyk, Wolfgang | Heringen, DE | 7 | 52 |
# of filed Patents : 7 Total Citations : 52 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 2 Citation Count
- C05D Class
- 60 % this patent is cited more than
- 8 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 30, 2028 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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 |
Full Text
in which m is in the range from 0.9 to 1.1 and n is in the range from 2.1 to 3.1, where the composition, with reference to the total weight of the composition, contains less than 10 wt. % free MgSO4 in the form of the anhydrate or in the form of urea-free hydrates of the magnesium sulfate, such as magnesium sulfate or magnesium-sulfate hexahydrate and/or less than 10 wt. % uncombined urea. In particular, m in Formula (I) indicates the value 1. In particular, n in Formula (I) indicates the value 3.

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Jul 03, 2019 | AS | ASSIGNMENT | free format text: MERGER AND CHANGE OF NAME;ASSIGNORS:K+S SALZ GMBH;K+S KALI GMBH;REEL/FRAME:066045/0077 Owner name: K+S MINERALS AND AGRICULTURE GMBH, GERMANY Effective Date: Jul 03, 2019 |
May 30, 2017 | I | Issuance | |
May 10, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Oct 02, 2015 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KLEINE-KLEFFMANN, ULRICH;WALCZYK, WOLFGANG;REEL/FRAME:036760/0814 Owner name: K+S KALI GMBH, GERMANY Effective Date: Oct 02, 2015 |
Dec 11, 2014 | P | Published | |
Dec 28, 2012 | F | Filing | |
Dec 30, 2011 | PD | Priority Date |

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