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

Patent Owner(s)

Patent Owner	Address
HUANG ZEXIN	SHANTOU

International Classification(s)

• 1502:PUMPS AND COMPRESSORS

• 2021 Application Filing Year
• 1502 Class
• 106 Applications Filed
• 106 Patents Issued To-Date
• 100 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Huang, Zexin	Shantou, CN	6	11
# of filed Patents : 6 Total Citations : 11

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Patent Citation Ranking

• 1 Citation Count
• 1502 Class

• 72.62 % this patent is cited more than
• 2 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Dec 6, 2026
7.5 Year Payment	$3600.00	$1800.00	$900.00	Dec 6, 2030
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Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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

Full Text

US Patent No: 9512454

Methods for improvement of enzymatic hydrolysis of lignocellullosic material

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Abstract

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The present invention relates to a method of enzymatic hydrolysis of a lignocellulosic material, comprising the steps of: a) pretreating the lignocellulosic material to obtain a slurry having a pH of less than 6; b) adding NaOH, Ca(OH)₂ and/or CaO to the slurry to increase its pH to at least 8, said addition being carried out at a slurry temperature of at least 60° C.; c) reducing the pH of the slurry to below 7; and optionally cooling the slurry from step b) to a temperature below 60° C.; and d) adding hydrolytic enzymes to the slurry from c) and allowing the slurry to hydrolyze wherein no washing of the slurry is performed prior to step d).

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Description

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Claims

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Legal Events

 

• MAFP2024
• MAFP2020
• CC2017
• I2016
• STCF2016
• P2014
• AS2014
• F2012
• PD2011

Date	Code	Event	Description
May 24, 2024	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
May 20, 2020	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
Jun 06, 2017	CC	CERTIFICATE OF CORRECTION
Dec 06, 2016	I	Issuance
Nov 16, 2016	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Jun 05, 2014	P	Published
Feb 24, 2014	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JONSSON, LEIF;ALRIKSSON, BJORN;SOUDHAMA, VENKATA PRABHAKAR;SIGNING DATES FROM 20131205 TO 20140210;REEL/FRAME:032276/0836 Owner name: SEKAB E-TECHNOLOGY AB, SWEDEN
Jun 11, 2012	F	Filing
Jun 30, 2011	PD	Priority Date