CN1620251A - 培养和包被的胰腺干细胞 - Google Patents

培养和包被的胰腺干细胞 Download PDF

Info

Publication number
CN1620251A
CN1620251A CNA028282302A CN02828230A CN1620251A CN 1620251 A CN1620251 A CN 1620251A CN A028282302 A CNA028282302 A CN A028282302A CN 02828230 A CN02828230 A CN 02828230A CN 1620251 A CN1620251 A CN 1620251A
Authority
CN
China
Prior art keywords
cells
insulin
culture
cell
pancreatic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA028282302A
Other languages
English (en)
Chinese (zh)
Inventor
臧文治
郑天立
王燕萍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AmCyte Inc
Original Assignee
AmCyte Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AmCyte Inc filed Critical AmCyte Inc
Publication of CN1620251A publication Critical patent/CN1620251A/zh
Pending legal-status Critical Current

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N5/00Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
    • C12N5/06Animal cells or tissues; Human cells or tissues
    • C12N5/0602Vertebrate cells
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/36Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
    • A61L27/38Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix containing added animal cells
    • A61L27/3804Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix containing added animal cells characterised by specific cells or progenitors thereof, e.g. fibroblasts, connective tissue cells, kidney cells
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K35/00Medicinal preparations containing materials or reaction products thereof with undetermined constitution
    • A61K35/12Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
    • A61K35/37Digestive system
    • A61K35/39Pancreas; Islets of Langerhans
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/36Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
    • A61L27/38Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix containing added animal cells
    • A61L27/3804Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix containing added animal cells characterised by specific cells or progenitors thereof, e.g. fibroblasts, connective tissue cells, kidney cells
    • A61L27/3834Cells able to produce different cell types, e.g. hematopoietic stem cells, mesenchymal stem cells, marrow stromal cells, embryonic stem cells
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/36Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
    • A61L27/38Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix containing added animal cells
    • A61L27/3895Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix containing added animal cells using specific culture conditions, e.g. stimulating differentiation of stem cells, pulsatile flow conditions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/18Drugs for disorders of the alimentary tract or the digestive system for pancreatic disorders, e.g. pancreatic enzymes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00Drugs for disorders of the metabolism
    • A61P3/08Drugs for disorders of the metabolism for glucose homeostasis
    • A61P3/10Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N5/00Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
    • C12N5/06Animal cells or tissues; Human cells or tissues
    • C12N5/0602Vertebrate cells
    • C12N5/0676Pancreatic cells
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N5/00Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
    • C12N5/06Animal cells or tissues; Human cells or tissues
    • C12N5/0602Vertebrate cells
    • C12N5/0676Pancreatic cells
    • C12N5/0677Three-dimensional culture, tissue culture or organ culture; Encapsulated cells
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K35/00Medicinal preparations containing materials or reaction products thereof with undetermined constitution
    • A61K35/12Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/14Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • A61K9/1605Excipients; Inactive ingredients
    • A61K9/1629Organic macromolecular compounds
    • A61K9/1652Polysaccharides, e.g. alginate, cellulose derivatives; Cyclodextrin

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Zoology (AREA)
  • Cell Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biotechnology (AREA)
  • Organic Chemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Wood Science & Technology (AREA)
  • Genetics & Genomics (AREA)
  • Veterinary Medicine (AREA)
  • Medicinal Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Epidemiology (AREA)
  • Transplantation (AREA)
  • Botany (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dermatology (AREA)
  • General Engineering & Computer Science (AREA)
  • Developmental Biology & Embryology (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Urology & Nephrology (AREA)
  • Hematology (AREA)
  • Diabetes (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Chemical & Material Sciences (AREA)
  • Obesity (AREA)
  • Emergency Medicine (AREA)
  • Endocrinology (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Nutrition Science (AREA)
  • Physiology (AREA)
  • Immunology (AREA)
CNA028282302A 2001-12-21 2002-12-23 培养和包被的胰腺干细胞 Pending CN1620251A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34225001P 2001-12-21 2001-12-21
US60/342,250 2001-12-21

Publications (1)

Publication Number Publication Date
CN1620251A true CN1620251A (zh) 2005-05-25

Family

ID=23341001

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA028282302A Pending CN1620251A (zh) 2001-12-21 2002-12-23 培养和包被的胰腺干细胞

Country Status (8)

Country Link
US (1) US7101546B2 (https=)
EP (1) EP1465493A4 (https=)
JP (1) JP2005532259A (https=)
KR (1) KR20040081744A (https=)
CN (1) CN1620251A (https=)
AU (1) AU2002359874B2 (https=)
CA (1) CA2470400A1 (https=)
WO (1) WO2003059072A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105746493A (zh) * 2016-03-29 2016-07-13 深圳爱生再生医学科技有限公司 微囊化免疫细胞冻存与复苏方法

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9572840B2 (en) 2003-06-27 2017-02-21 DePuy Synthes Products, Inc. Regeneration and repair of neural tissue using postpartum-derived cells
WO2006071794A2 (en) 2004-12-23 2006-07-06 Ethicon Incorporated Postpartum cells derived from umbilical cord tissue, and methods of making and using the same
US8790637B2 (en) 2003-06-27 2014-07-29 DePuy Synthes Products, LLC Repair and regeneration of ocular tissue using postpartum-derived cells
US8518390B2 (en) 2003-06-27 2013-08-27 Advanced Technologies And Regenerative Medicine, Llc Treatment of stroke and other acute neural degenerative disorders via intranasal administration of umbilical cord-derived cells
WO2005001080A2 (en) 2003-06-27 2005-01-06 Ethicon, Incorporated Postpartum-derived cells for use in treatment of disease of the heart and circulatory system
US8491883B2 (en) 2003-06-27 2013-07-23 Advanced Technologies And Regenerative Medicine, Llc Treatment of amyotrophic lateral sclerosis using umbilical derived cells
US7875272B2 (en) 2003-06-27 2011-01-25 Ethicon, Incorporated Treatment of stroke and other acute neuraldegenerative disorders using postpartum derived cells
US9592258B2 (en) 2003-06-27 2017-03-14 DePuy Synthes Products, Inc. Treatment of neurological injury by administration of human umbilical cord tissue-derived cells
US20050053586A1 (en) * 2003-09-04 2005-03-10 Bryan Conn Entrapped stem cells and uses thereof
CA2460602A1 (en) * 2004-03-05 2005-09-05 Raewyn Seaberg Pancreatic multipotent progenitor cells
CA2583308C (en) * 2004-10-08 2020-01-07 Georgia Tech Research Corporation Microencapsulation of cells in hydrogels using electrostatic potentials
WO2006053052A2 (en) * 2004-11-11 2006-05-18 The Rogosin Institute Method for treating patients with implants of islets which have been kept in long term, in vitro culture
WO2006071778A2 (en) 2004-12-23 2006-07-06 Ethicon Incorporated Treatment of parkinson's disease and related disorders using postpartum derived cells
US8647867B2 (en) 2005-09-30 2014-02-11 National University Corportion Okayama University Cell cultivation method and cell culture
WO2007070870A1 (en) 2005-12-16 2007-06-21 Ethicon, Inc. Compositions and methods for inhibiting adverse immune response in histocompatibility-mismatched transplantation
JP5179376B2 (ja) 2005-12-19 2013-04-10 エシコン・インコーポレイテッド ローラーボトルでの分娩後取り出し細胞の体外増殖
US9125906B2 (en) 2005-12-28 2015-09-08 DePuy Synthes Products, Inc. Treatment of peripheral vascular disease using umbilical cord tissue-derived cells
CA2637663C (en) 2006-01-24 2015-06-02 Brown University Cell aggregation and encapsulation device and method
US20070237749A1 (en) 2006-04-07 2007-10-11 Wang Taylor G Multi-membrane immunoisolation system for cellular transplant
JP5323845B2 (ja) 2007-10-05 2013-10-23 エシコン・インコーポレイテッド ヒト臍帯組織由来細胞を用いた腎組織の修復および再建
US8236538B2 (en) 2007-12-20 2012-08-07 Advanced Technologies And Regenerative Medicine, Llc Methods for sterilizing materials containing biologically active agents
AU2013237748B2 (en) * 2008-11-14 2015-11-26 Viacyte, Inc. Encapsulation of pancreatic cells derived from human pluripotent stem cells
AU2016200954B2 (en) * 2008-11-14 2018-01-04 Viacyte, Inc. Encapsulation of pancreatic cells derived from human pluripotent stem cells
JP2012508584A (ja) 2008-11-14 2012-04-12 ヴィアサイト,インコーポレイテッド ヒト多能性幹細胞由来膵臓細胞のカプセル化
US10179900B2 (en) 2008-12-19 2019-01-15 DePuy Synthes Products, Inc. Conditioned media and methods of making a conditioned media
CN102387807A (zh) 2008-12-19 2012-03-21 先进科技及再生医学有限责任公司 肺部疾病和病症的治疗
SG174551A1 (en) 2009-03-26 2011-10-28 Ethicon Inc Human umbilical cord tissue cells as therapy for alzheimer' s disease
JP5850416B2 (ja) * 2009-06-19 2016-02-03 国立大学法人九州大学 細胞組織体の製造方法
US8501476B2 (en) 2009-10-07 2013-08-06 Brown University Assays and methods for fusing cell aggregates to form proto-tissues
US9468680B2 (en) 2011-09-22 2016-10-18 Brown University Differential effects of drugs on transport in a multi-layer 3D spheroid model
US9243278B2 (en) 2011-09-22 2016-01-26 Brown University Mechanotransduction by the synergistic action of heterotypic cell interactions
AU2012358810B2 (en) 2011-12-23 2018-03-15 DePuy Synthes Products, Inc. Detection of human umbilical cord tissue-derived cells
AU2014225352B2 (en) 2013-03-07 2017-02-09 Viacyte, Inc. 3-dimensional large capacity cell encapsulation device assembly
US11066649B2 (en) * 2014-03-19 2021-07-20 Institut National De La Sante Et De La Recherche Medicale (Inserm) Method for inducing human cholangiocyte differentiation
CA3042495A1 (en) 2016-11-10 2018-05-17 Viacyte, Inc. Pdx1 pancreatic endoderm cells in cell delivery devices and methods thereof
US10767164B2 (en) 2017-03-30 2020-09-08 The Research Foundation For The State University Of New York Microenvironments for self-assembly of islet organoids from stem cells differentiation
CN111868235A (zh) * 2018-03-19 2020-10-30 国立大学法人京都大学 水凝胶胶囊
US20210196646A1 (en) * 2018-08-15 2021-07-01 Wake Forest University Health Sciences Improved formulations for pancreatic islet encapsulation
WO2025247851A1 (en) * 2024-05-27 2025-12-04 Artidis Ag Preservation reagents for biological samples and use thereof

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5739033A (en) * 1989-09-20 1998-04-14 Vivorx, Inc. Physiological cell separation and method of separating cells using same
EP0605428B9 (en) * 1991-06-24 2003-01-02 hCell Technology, Inc. Hormone-secreting pancreatic cells maintained in long-term culture
US5334640A (en) * 1992-04-08 1994-08-02 Clover Consolidated, Ltd. Ionically covalently crosslinked and crosslinkable biocompatible encapsulation compositions and methods
US5578314A (en) * 1992-05-29 1996-11-26 The Regents Of The University Of California Multiple layer alginate coatings of biological tissue for transplantation
ATE204470T1 (de) * 1992-05-29 2001-09-15 Vivorx Inc Mikroverkapselung von zellen
AU687386B2 (en) * 1993-04-08 1998-02-26 Human Cell Cultures, Inc. Cell culturing method and medium
US6001647A (en) * 1994-04-28 1999-12-14 Ixion Biotechnology, Inc. In vitro growth of functional islets of Langerhans and in vivo uses thereof
WO1997015310A1 (en) 1995-10-25 1997-05-01 University Of Florida Research Foundation, Inc. In vitro growth of functional islets of langerhans and in vivo uses thereof
US5874306A (en) * 1996-12-12 1999-02-23 The Regents Of The University Of California Culturing human pancreatic endocrine cells in medium containing extracellular matrix from human bladder carcinoma cells
AU4544299A (en) 1998-05-29 1999-12-13 Cythera, Inc. Promotion of cell differentiation by initially passaged cells
US20010000324A1 (en) * 1998-05-29 2001-04-19 Todorov Ivan T. Promotion of cell differentiation by initially passaged cells
AU3227000A (en) 1999-02-10 2000-08-29 Ontogeny, Inc. Methods of inducing insulin positive progenitor cells
CA2375509A1 (en) 1999-06-23 2000-12-28 Joslin Diabetes Center, Inc Methods of making pancreatic islet cells
US6759039B2 (en) * 2000-06-30 2004-07-06 Amcyte, Inc. Culturing pancreatic stem cells having a specified, intermediate stage of development

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105746493A (zh) * 2016-03-29 2016-07-13 深圳爱生再生医学科技有限公司 微囊化免疫细胞冻存与复苏方法

Also Published As

Publication number Publication date
WO2003059072A1 (en) 2003-07-24
JP2005532259A (ja) 2005-10-27
EP1465493A1 (en) 2004-10-13
AU2002359874B2 (en) 2008-11-20
CA2470400A1 (en) 2003-07-24
KR20040081744A (ko) 2004-09-22
US20030170215A1 (en) 2003-09-11
US7101546B2 (en) 2006-09-05
AU2002359874A1 (en) 2003-07-30
EP1465493A4 (en) 2005-05-04

Similar Documents

Publication Publication Date Title
CN1620251A (zh) 培养和包被的胰腺干细胞
US6759039B2 (en) Culturing pancreatic stem cells having a specified, intermediate stage of development
CN1602351A (zh) 源自人胚胎干细胞的胰岛细胞
CN100347293C (zh) 来源于单核细胞的去分化的可程序化干细胞及其制备和应用
CN1423563A (zh) 胰腺干细胞及其在器官移植中的用途
ES2627419T3 (es) Células estromales adultas derivadas del páncreas
EP2137300B1 (en) Pluripotent autologous stem cells from oral or gastrointestinal mucosa
CN1592781A (zh) 脂肪衍生的干细胞和网格体
CN1871343A (zh) 从脂肪组织制备干细胞的方法和系统
CN101052299A (zh) 来自角膜缘的未分化干细胞组织系统
CN1589330A (zh) 胰岛干细胞及其在治疗糖尿病中的用途
CN1351656A (zh) 人肝脏祖先
CN1742082A (zh) 原肝干细胞和近肝干细胞
US8377689B2 (en) EPHA4-positive human adult pancreatic endocrine progenitor cells
CN1423523A (zh) 来自人体内的免疫系统
WO2005071066A1 (en) Methods and compositions for preparing pancreatic insulin secreting cells
JP2010046098A (ja) ヒト膵臓上皮前駆細胞ならびにその単離および使用の方法
CN113939585A (zh) 人同种异体肝源性祖细胞的制备
CN1258589C (zh) 分离双能肝祖细胞的方法
CN1461220A (zh) 血管化组织移植物
CN1662644A (zh) 制备人β细胞系的方法
CN1982440B (zh) 经培养的胰腺细胞及其培养方法和用途
CN1611598A (zh) 人胎儿胰腺干细胞系及其建立方法
EP1301589A1 (en) Culturing pancreatic stem cells having a specified, intermediate stage of development
EP4051781A1 (en) Viable pancreatic islet-like cell structures and a method of preparing thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication