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(12) Patent: | (11) CA 2214013 |
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(54) English Title: | LIGNIN BASED POLYOLS |
(54) French Title: | POLYOLS A BASE DE LIGNINE |
Status: | Term Expired - Post Grant Beyond Limit |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | SMART & BIGGAR LP |
(74) Associate agent: | |
(45) Issued: | 2011-05-10 |
(86) PCT Filing Date: | 1996-12-27 |
(87) Open to Public Inspection: | 1997-07-10 |
Examination requested: | 2001-11-15 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | Yes |
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(86) PCT Filing Number: | PCT/US1996/020140 |
(87) International Publication Number: | US1996020140 |
(85) National Entry: | 1997-08-27 |
(30) Application Priority Data: | ||||||
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Certain lignins which are readily available from pulping processes function as a polyol component of an isocyanate system to make
foams and urethane plastics. Use of the lignin in this manner provides moisture and flame resistance and produces products having sufficient
rigidity. The sodium level must be controlled so that the reaction between the hydroxyl groups and the isocyanates produces products with
the optimal properties.
Certaines lignines qui sont facilement accessibles à partir des procédés de cuisson de la pâte à papier peuvent servir comme un constituant polyolique dans un système isocyanate pour fabriquer des mousses et des plastiques à base d'uréthane. L'utilisation de la lignine de cette façon confère une résistance à l'humidité et un caractère ininflammable et donne des produits ayant une rigidité suffisante. La concentration de sodium doit être contrôlée de manière que la réaction entre les groupes hydroxyle et les isocyanates donne des produits ayant des propriétés optimales.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 2214013 was not found.
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Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
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Description | Date |
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Inactive: Expired (new Act pat) | 2016-12-27 |
Inactive: IPC deactivated | 2011-07-29 |
Inactive: IPC deactivated | 2011-07-29 |
Grant by Issuance | 2011-05-10 |
Inactive: Cover page published | 2011-05-09 |
Small Entity Declaration Request Received | 2011-02-24 |
Pre-grant | 2011-02-24 |
Inactive: Final fee received | 2011-02-24 |
Inactive: IPC removed | 2011-02-04 |
Inactive: IPC removed | 2011-02-04 |
Inactive: IPC assigned | 2011-02-04 |
Inactive: IPC assigned | 2011-02-04 |
Inactive: IPC assigned | 2011-02-04 |
Inactive: IPC removed | 2011-02-04 |
Inactive: IPC removed | 2011-02-04 |
Inactive: IPC removed | 2011-02-04 |
Inactive: IPC expired | 2011-01-01 |
Letter Sent | 2010-08-24 |
4 | 2010-08-24 |
Notice of Allowance is Issued | 2010-08-24 |
Notice of Allowance is Issued | 2010-08-24 |
Inactive: Approved for allowance (AFA) | 2010-08-12 |
Inactive: IPC from MCD | 2010-02-01 |
Inactive: IPC expired | 2010-01-01 |
Amendment Received - Voluntary Amendment | 2009-12-10 |
Inactive: S.30(2) Rules - Examiner requisition | 2009-06-11 |
Amendment Received - Voluntary Amendment | 2008-10-03 |
Inactive: S.30(2) Rules - Examiner requisition | 2008-04-09 |
Small Entity Declaration Determined Compliant | 2007-11-13 |
Small Entity Declaration Determined Compliant | 2007-11-13 |
Amendment Received - Voluntary Amendment | 2007-11-07 |
Inactive: S.30(2) Rules - Examiner requisition | 2007-05-09 |
Amendment Received - Voluntary Amendment | 2006-11-09 |
Inactive: S.30(2) Rules - Examiner requisition | 2006-05-09 |
Inactive: IPC from MCD | 2006-03-12 |
Inactive: IPC from MCD | 2006-03-12 |
Inactive: Office letter | 2006-01-12 |
Inactive: First IPC assigned | 2005-10-06 |
Letter Sent | 2005-05-24 |
Reinstatement Request Received | 2005-04-29 |
Reinstatement Requirements Deemed Compliant for All Abandonment Reasons | 2005-04-29 |
Amendment Received - Voluntary Amendment | 2005-04-29 |
Inactive: Abandoned - No reply to s.30(2) Rules requisition | 2005-03-10 |
Inactive: S.30(2) Rules - Examiner requisition | 2004-09-10 |
Letter Sent | 2001-12-20 |
All Requirements for Examination Determined Compliant | 2001-11-15 |
Request for Examination Requirements Determined Compliant | 2001-11-15 |
Request for Examination Received | 2001-11-15 |
Inactive: IPC assigned | 1997-11-18 |
Inactive: IPC assigned | 1997-11-18 |
Inactive: IPC assigned | 1997-11-18 |
Inactive: IPC assigned | 1997-11-18 |
Inactive: IPC assigned | 1997-11-18 |
Classification Modified | 1997-11-18 |
Inactive: First IPC assigned | 1997-11-18 |
Inactive: Notice - National entry - No RFE | 1997-10-31 |
Application Received - PCT | 1997-10-30 |
Application Published (Open to Public Inspection) | 1997-07-10 |
Abandonment Date | Reason | Reinstatement Date |
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2005-04-29 |
The last payment was received on 2010-11-22
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
Patent fees are adjusted on the 1st of January every year. The amounts above are the current amounts if received by December 31 of the current year.
Please refer to the CIPO
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Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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KENNETH R. KURPLE |
Past Owners on Record |
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None |