AU782156B2 - Production of gloves and other articles of flexible polymer material - Google Patents

Production of gloves and other articles of flexible polymer material Download PDF

Info

Publication number
AU782156B2
AU782156B2 AU31430/01A AU3143001A AU782156B2 AU 782156 B2 AU782156 B2 AU 782156B2 AU 31430/01 A AU31430/01 A AU 31430/01A AU 3143001 A AU3143001 A AU 3143001A AU 782156 B2 AU782156 B2 AU 782156B2
Authority
AU
Australia
Prior art keywords
latex
former
layer
process according
foam mixture
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.)
Ceased
Application number
AU31430/01A
Other languages
English (en)
Other versions
AU3143001A (en
Inventor
Liong Yu Loo
James Michael Daniel Woodford
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.)
Ansell Healthcare Products LLC
Original Assignee
Ansell Services 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 Ansell Services Inc filed Critical Ansell Services Inc
Publication of AU3143001A publication Critical patent/AU3143001A/en
Application granted granted Critical
Publication of AU782156B2 publication Critical patent/AU782156B2/en
Assigned to ANSELL HEALTHCARE PRODUCTS LLC reassignment ANSELL HEALTHCARE PRODUCTS LLC Alteration of Name(s) in Register under S187 Assignors: ANSELL SERVICES INC.
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/14—Dipping a core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/003—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/022—Foaming unrestricted by cavity walls, e.g. without using moulds or using only internal cores
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D19/00—Gloves
    • A41D19/0055—Plastic or rubber gloves
    • A41D19/0058—Three-dimensional gloves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2007/00—Use of natural rubber as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0058—Liquid or visquous
    • B29K2105/0064—Latex, emulsion or dispersion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/045—Condition, form or state of moulded material or of the material to be shaped cellular or porous with open cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4842—Outerwear
    • B29L2031/4864—Gloves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987—With nonvoid component of specified composition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987—With nonvoid component of specified composition
    • Y10T428/249988—Of about the same composition as, and adjacent to, the void-containing component

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Moulding By Coating Moulds (AREA)
  • Gloves (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
AU31430/01A 2000-02-08 2001-02-08 Production of gloves and other articles of flexible polymer material Ceased AU782156B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
MYPI20000428 2000-02-08
MYPI20000428A MY133355A (en) 2000-02-08 2000-02-08 Production of gloves and other articles of flexible polymer material
PCT/AU2001/000125 WO2001058656A1 (en) 2000-02-08 2001-02-08 Production of gloves and other articles of flexible polymer material

Publications (2)

Publication Number Publication Date
AU3143001A AU3143001A (en) 2001-08-20
AU782156B2 true AU782156B2 (en) 2005-07-07

Family

ID=19749443

Family Applications (1)

Application Number Title Priority Date Filing Date
AU31430/01A Ceased AU782156B2 (en) 2000-02-08 2001-02-08 Production of gloves and other articles of flexible polymer material

Country Status (9)

Country Link
US (3) US7048884B2 (https=)
EP (1) EP1254002B1 (https=)
JP (1) JP2003530236A (https=)
AT (1) ATE420756T1 (https=)
AU (1) AU782156B2 (https=)
DE (1) DE60137404D1 (https=)
ES (1) ES2319099T3 (https=)
MY (1) MY133355A (https=)
WO (1) WO2001058656A1 (https=)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7354424B2 (en) 1998-08-07 2008-04-08 Tamicare Ltd. Protective garment
MY133355A (en) * 2000-02-08 2007-11-30 Ansell Healthcare Prod Inc Production of gloves and other articles of flexible polymer material
US7037579B2 (en) * 2003-12-19 2006-05-02 Ansell Healthcare Products Llc Polymer composite fibrous coating on dipped rubber articles and method
US8709573B2 (en) 2003-12-19 2014-04-29 Ansell Healthcare Products Llc Polymer bonded fibrous coating on dipped rubber articles skin contacting external surface
US9890497B2 (en) 2004-03-31 2018-02-13 A T G Ceylon (Private) Limited Anti-perspirant glove
GB2400051B (en) * 2004-03-31 2005-03-09 John Ward Ceylon Polymeric garment material
US9731319B2 (en) 2004-11-05 2017-08-15 Tamicare Ltd. Stretchable sheets comprising a variety of layers and zones and methods to produce such products
EP1807253B1 (en) 2004-11-05 2013-04-10 Tamicare Ltd. Method to produce stretchable products
US7901740B2 (en) 2004-11-05 2011-03-08 Tamicare Ltd. Methods to produce stretchable products
US8353883B2 (en) * 2005-12-15 2013-01-15 Kimberly-Clark Worldwide, Inc. Elastomeric glove containing a foam donning layer
GB2438930B (en) * 2006-06-07 2011-04-13 C K Europ Ltd Apparatus and method for manufacturing a glove containing electro-magnetically detectable particles
US8499363B2 (en) * 2006-07-28 2013-08-06 Shen Wei (Usa) Inc. Elastomeric flexible article with absorbent polymer and manufacturing method
EP2020427A1 (en) * 2007-08-03 2009-02-04 Ampelos Glove and process for manufacturing the same
US7971275B2 (en) * 2008-08-18 2011-07-05 Ansell Healthcare Products Llc Cut resistant damage tolerant chemical and liquid protective glove with enhanced wet and dry grip
US20100266805A1 (en) * 2009-04-17 2010-10-21 Glenoit Llc Latex compositions having improved wash durability and articles containing the same
US20120240308A1 (en) * 2011-03-21 2012-09-27 Ansell Limited Dyed, coated glove and method of making same
AU2013256510B2 (en) * 2012-05-02 2016-12-01 Ansell Healthcare Products Llc Highly absorbant foamed lining
CN104270974B (zh) 2012-06-29 2017-12-01 安塞尔保健产品有限责任公司 耐磨损且抗切割的涂层及涂层手套
WO2014138782A1 (en) 2013-03-12 2014-09-18 Ansell Limited Breach or contamination indicating article
US11925222B2 (en) 2015-06-19 2024-03-12 Summit Glove Inc. Safety glove with fingertip protective member
WO2015068123A1 (en) * 2013-11-08 2015-05-14 University Of Moratuwa, Sri Lanka A novel process of reducing extractable proteins from natural rubber latex dipped products
CN103535928B (zh) * 2013-11-11 2015-09-16 镇江苏惠乳胶制品有限公司 一种吸汗手套的制备方法
US9585426B2 (en) * 2013-11-26 2017-03-07 Ansell Limited Glove having foam lining for sweat management
US10350848B2 (en) * 2013-11-26 2019-07-16 Ansell Limited Nitrile/polyurethane polymer blends
US10253170B2 (en) 2014-03-25 2019-04-09 Ansell Limited Polyisoprene/polychloroprene compositions
US20150272245A1 (en) * 2014-03-25 2015-10-01 Ansell Limited Polymeric glove having varied thickness
WO2015188221A1 (en) 2014-06-12 2015-12-17 Ansell Limited Breach or contamination indicating article, optionally with pre-warning indicator
CN111286091A (zh) * 2018-12-10 2020-06-16 江苏金世缘乳胶制品股份有限公司 一种高弹性低密度天然乳胶制品的制备方法
CN113550153B (zh) * 2020-04-24 2026-01-09 霍尼韦尔安全产品美国股份有限公司 用于织物的分层涂层
US12178268B2 (en) 2022-07-27 2024-12-31 Summit Glove Inc. Protective device for use with a glove

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03161501A (ja) * 1989-11-20 1991-07-11 Moon Star Co 耐電性手袋の製造法

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1814473A (en) * 1930-10-02 1931-07-14 Dewey And Almy Chem Comp Colloidal dispersion of plastic compositions such as caoutchouc, gutta percha, balata, artificial rubber (factis), and the like
US2324735A (en) * 1941-01-16 1943-07-20 Abraham N Spanel Composite rubber article and method of producing same
US2321111A (en) * 1941-01-16 1943-06-08 Int Latex Corp Process for forming foam rubber and products thereof
US3608053A (en) * 1969-10-30 1971-09-21 Dart Ind Inc Cured latex article and method of making same
US3968285A (en) 1971-03-15 1976-07-06 General Latex And Chemical Corporation One-part foamable latex composition
US3945049A (en) * 1972-08-21 1976-03-23 Barlow's Coated Fabrics Limited Protective gloves
US3890261A (en) * 1972-11-09 1975-06-17 Petro Tex Chem Corp High solids chloroprene polymer latex
US3919451A (en) * 1973-07-09 1975-11-11 Rohm & Haas Method for finishing leather and leather substitutes
US3998772A (en) * 1974-09-27 1976-12-21 Alan Beerbower Novel rubber latices and method of producing same
CA1118949A (en) * 1978-04-11 1982-02-23 Ramesh K. Gupta Blended plastomeric and elastomeric rubber latex sponge
US4515851A (en) * 1982-10-25 1985-05-07 Becton, Dickinson And Company Slip resistant surfaces
US4519098A (en) * 1983-06-08 1985-05-28 Becton, Dickinson And Company Wearing apparel and methods for manufacturing of wearing apparel
JPS61275406A (ja) * 1985-05-30 1986-12-05 東和グロ−ブ株式会社 手袋及びその製造方法
GB8519778D0 (en) * 1985-08-07 1985-09-11 Ciba Geigy Ag Moulded composites
US4809365A (en) * 1987-04-08 1989-03-07 Becton, Dickinson And Company Glove configuration and method
DE3721766A1 (de) * 1987-07-01 1989-01-12 Bayer Ag Mischungen aus elastomer-latices und dispersionen von aromatischen polycarbonaten, polyestern oder polyestercarbonaten sowie daraus hergestellte produkte
US5138719A (en) * 1988-12-01 1992-08-18 Hutchinson, S.A. Gloves, finger stalls and similar protective and operational articles, and processes for their manufacture
US5084514A (en) * 1990-11-14 1992-01-28 Reichhold Chemicals, Inc. Latex gloves with improved donnability
JPH04292644A (ja) * 1991-03-20 1992-10-16 Nitto Denko Corp 多孔質高分子成形品及びその製造法
US5284607A (en) * 1991-11-22 1994-02-08 Johnson & Johnson Medical, Inc. Process for forming powder-free medical gloves
DE4207897A1 (de) * 1992-03-12 1993-09-16 Huels Chemische Werke Ag Kunststoff-schaum-verbundwerkstoffe
US5438709A (en) * 1992-03-20 1995-08-08 Johnson & Johnson Orthopaedics, Inc. Lubricous gloves and method for making lubricous gloves
WO1994020574A2 (en) * 1993-03-01 1994-09-15 Baxter International Inc. Sequential copolymer based gloves
US6075081A (en) * 1997-04-23 2000-06-13 Ansell Healthcare Products Inc. Manufacture of rubber articles
US5883144A (en) * 1994-09-19 1999-03-16 Sentinel Products Corp. Silane-grafted materials for solid and foam applications
WO1996023428A1 (en) * 1995-02-02 1996-08-08 Baxter International Inc. A multiple layered antimicrobial or antiviral glove
US6576633B1 (en) * 1996-02-22 2003-06-10 The Dow Chemical Company Stable liquid antimicrobial suspension compositions containing quarternaries prepared from hexamethylenetetramine and certain halohydrocarbons
JPH09310209A (ja) * 1996-05-20 1997-12-02 Sumitomo Rubber Ind Ltd ゴム手袋
DE19708451A1 (de) * 1997-03-03 1998-09-10 Basf Ag Verfahren zum Herstellen von dünnwandigen elastischen Formkörpern
AU5090098A (en) * 1997-10-20 1999-05-10 Bio Barrier, Inc. Method of forming a membrane, especially a latex or polymer membrane, including multiple discrete layers
US5998540A (en) * 1998-10-22 1999-12-07 Witco Corporation Polyurethane dispersions useful for preparing thin wall articles
JP2001207314A (ja) * 2000-01-31 2001-08-03 Honny Chem Ind Co Ltd ゴム製手袋及びその製造方法
MY133355A (en) * 2000-02-08 2007-11-30 Ansell Healthcare Prod Inc Production of gloves and other articles of flexible polymer material
US8353883B2 (en) * 2005-12-15 2013-01-15 Kimberly-Clark Worldwide, Inc. Elastomeric glove containing a foam donning layer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03161501A (ja) * 1989-11-20 1991-07-11 Moon Star Co 耐電性手袋の製造法

Also Published As

Publication number Publication date
EP1254002B1 (en) 2009-01-14
EP1254002A1 (en) 2002-11-06
EP1254002A4 (en) 2007-05-23
ATE420756T1 (de) 2009-01-15
US8192834B2 (en) 2012-06-05
US20100095429A1 (en) 2010-04-22
MY133355A (en) 2007-11-30
US7048884B2 (en) 2006-05-23
JP2003530236A (ja) 2003-10-14
DE60137404D1 (de) 2009-03-05
US20060179541A1 (en) 2006-08-17
WO2001058656A1 (en) 2001-08-16
US20030090037A1 (en) 2003-05-15
AU3143001A (en) 2001-08-20
ES2319099T3 (es) 2009-05-04

Similar Documents

Publication Publication Date Title
AU782156B2 (en) Production of gloves and other articles of flexible polymer material
KR101424856B1 (ko) 딥 성형용 카르본산 변성 니트릴계 공중합체 라텍스, 이를 포함하는 딥 성형용 라텍스 조성물 및 이로부터 제조된 성형품
CN111253639B (zh) 一种环保热敏性丁腈防护手套的制备方法
KR101467020B1 (ko) 딥 성형용 카르본산 변성 니트릴계 공중합체 라텍스, 이를 포함하는 딥 성형용 라텍스 조성물 및 이로부터 제조된 성형품
KR20170060793A (ko) 딥 성형용 라텍스 조성물 및 이로부터 제조된 성형품
CN108864394A (zh) 一种聚氨酯医用手套用低模量耐醇型水性聚氨酯树脂的制备方法
KR20120086927A (ko) 딥 성형용 카르본산 변성 니트릴계 공중합체 라텍스, 이를 포함하는 딥 성형용 라텍스 조성물 및 이로부터 제조된 성형품
KR101779295B1 (ko) 딥 성형용 라텍스 조성물 및 이로부터 제조된 딥 성형품
EP1090660A1 (en) A bladder shell for inflatable balls
CN113563648A (zh) 一种防止掉渣的丁腈橡胶磨砂手套及制备方法
KR101421322B1 (ko) 딥 성형용 라텍스 조성물 및 이를 사용하여 제조된 니트릴 고무 제품
CN112048917B (zh) 一种有衬里的双层丁基防化手套的制备方法
KR101582005B1 (ko) 딥 성형용 라텍스 조성물 및 이로부터 제조된 성형품
US8353793B2 (en) Carboxylated acrylonitrile butadiene latex seamless bladder and a process for manufacturing thereof
KR101573980B1 (ko) 카르본산 변성 니트릴계 공중합체 라텍스 조성물 및 딥 성형용 조성물
KR101570568B1 (ko) 딥 성형용 카르본산 변성 니트릴계 공중합체 라텍스 조성물 및 이를 포함하는 딥 성형용 조성물
CN116376130B (zh) 一种环保型氯丁胶医用手套及其制备方法
JP5490190B2 (ja) 手袋およびその製造方法
CN110003538A (zh) 一种发泡橡胶及其制备方法
CN105542119B (zh) 一种防刺穿聚氨酯鞋底材料的制备方法
JP4213438B2 (ja) 化粧パフ用共重合体ラテックス
KR102093962B1 (ko) 딥 성형용 라텍스 조성물 및 이로부터 제조된 성형품
JPH08112109A (ja) 靴甲被と下周縁ゴム製テープとの接着法
Blackley Latex foam rubber
CN116175842A (zh) 一种有衬里手套的制备方法

Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired