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

Patent Owner(s)

Patent Owner	Address
RAUMA-REPOLA OY	SNELLMANNINKATU 13 00170 HELSINKI

International Classification(s)

• F01D:NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g....

• 1986 Application Filing Year
• F01D Class
• 118 Applications Filed
• 1 Patents Issued To-Date
• 0.85 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Aaltonen, Timo	Luvia, FI	8	268
# of filed Patents : 8 Total Citations : 268
Sampi, Jukka	Pori, FI	1	15
# of filed Patents : 1 Total Citations : 15

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Patent Citation Ranking

• 15 Citation Count
• F01D Class

• 0 % this patent is cited more than
• 37 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
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

US Patent No: 5494498

Methods for using concentrated nitrogen-containing fertilizers

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Abstract

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Urea increases the solute content of a fertilizer comprising water and at least two different nitrate-containing compounds selected from the group consisting of ammonium nitrate, alkali metal nitrates, and alkaline earth metal nitrates. In addition, urea enhances plant uptake of alkaline earth metals. Particularly favored are quaternary aqueous solutions containing urea, calcium nitrate, and ammonium nitrate.

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Description

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Claims

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Legal Events

 

• MAFP2022
• MAFP2019
• CC2016
• I2015
• STCF2015
• P2014
• F2012
• PD2011

Date	Code	Event	Description
Sep 20, 2022	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8
Jan 04, 2019	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4
May 17, 2016	CC	CERTIFICATE OF CORRECTION
Jul 14, 2015	I	Issuance
Jun 24, 2015	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Sep 11, 2014	P	Published
Sep 19, 2012	F	Filing
Sep 20, 2011	PD	Priority Date