GB1506045A - Abrasive composition - Google Patents

Abrasive composition

Info

Publication number
GB1506045A
GB1506045A GB21194/75A GB2119475A GB1506045A GB 1506045 A GB1506045 A GB 1506045A GB 21194/75 A GB21194/75 A GB 21194/75A GB 2119475 A GB2119475 A GB 2119475A GB 1506045 A GB1506045 A GB 1506045A
Authority
GB
United Kingdom
Prior art keywords
water
salts
carbon atoms
soluble
mineral
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.)
Expired
Application number
GB21194/75A
Other languages
English (en)
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.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
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 Procter and Gamble Co filed Critical Procter and Gamble Co
Publication of GB1506045A publication Critical patent/GB1506045A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/24—Phosphorous; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/25—Silicon; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/43—Guanidines
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • A61K8/8152—Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/10—Treatment with macromolecular organic compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
    • C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Birds (AREA)
  • Epidemiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cosmetics (AREA)
GB21194/75A 1974-05-21 1975-05-19 Abrasive composition Expired GB1506045A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47194174A 1974-05-21 1974-05-21

Publications (1)

Publication Number Publication Date
GB1506045A true GB1506045A (en) 1978-04-05

Family

ID=23873592

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21194/75A Expired GB1506045A (en) 1974-05-21 1975-05-19 Abrasive composition

Country Status (7)

Country Link
US (2) US4110083A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS609484B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1063357A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2522046A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2271840B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1506045A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT1036898B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159280A (en) 1976-09-15 1979-06-26 J. M. Huber Corporation Therapeutic dentifrices in unlined container and methods
US4421527A (en) 1977-12-20 1983-12-20 J. M. Huber Corporation High fluoride compatibility dentifrice abrasives and compositions
GB2144631A (en) * 1983-06-30 1985-03-13 Shiken Ltd Dentifrice
US6143281A (en) * 1987-03-31 2000-11-07 Smithkline Beecham P.L.C. Dentifrice compositions
WO2010114540A1 (en) * 2009-04-01 2010-10-07 Colgate-Palolive Company Dentifrice compositions and methods for treating and preventing damage to tooth surfaces
MD4453C1 (ro) * 2015-04-27 2017-07-31 Институт Химии Академии Наук Молдовы Pastă de dinţi şi procedeu de obţinere a acesteia
US20180296447A1 (en) * 2015-04-28 2018-10-18 Imerys Filtration Minerals, Inc. Biocidal compositions and related methods

Families Citing this family (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1063357A (en) * 1974-05-21 1979-10-02 James J. Benedict Abrasive composition
JPS5649969Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1977-12-20 1981-11-21
US4242842A (en) * 1979-08-08 1981-01-06 La Pierre Synthetique Baikowski, S.A. Precision polishing suspension and method for making same
ZA804901B (en) * 1979-08-13 1981-08-26 Sterling Drug Inc Cleansing composition
EP0104679B1 (en) * 1982-09-01 1989-08-09 Unilever N.V. Abrasive agglomerates for use in scouring cleaning compositions
JPH0742218B2 (ja) * 1983-06-17 1995-05-10 ライオン株式会社 練歯磨組成物
JPS6046915A (ja) * 1983-08-24 1985-03-14 Taki Chem Co Ltd 合成無定形ジルコニウム結合珪酸塩及びその製造方法
US4614649A (en) * 1983-12-09 1986-09-30 Sterling Drug Inc. Antiplaque saccharin salt dentrifices and method of use thereof
US4501834A (en) * 1983-12-22 1985-02-26 Colgate-Palmolive Company Gels formed from anionic and cationic polymers
JPS60183472A (ja) * 1984-03-02 1985-09-18 Teijin Seiki Co Ltd レボルビング型自動ワインダにおける糸掛け方法
SE8502540L (sv) * 1984-06-12 1985-12-13 Colgate Palmolive Co Stabilt tandvardsmedel innehallande dextranas
US4601899A (en) * 1985-03-27 1986-07-22 Beecham Inc. Hydrous toothpaste containing TiF4 and chelating agent
US4601898A (en) * 1985-03-27 1986-07-22 Beecham Inc. Aqueous solution containing TiF4 and chelating agent
US4621120A (en) * 1985-04-01 1986-11-04 Eastman Kodak Company Polymeric antibacterial compositions
US4837007A (en) * 1985-12-11 1989-06-06 Lever Brothers Company Fluoridating oral cavity
US4714563A (en) * 1986-07-18 1987-12-22 The Procter & Gamble Company Antimicrobial toilet bars
LU86586A1 (fr) * 1986-09-15 1988-04-05 Oreal Dentifrice contenant un tensio-actif non ionique poly(hydroxypropylether)et un polymere cationique determine
US4755327A (en) * 1986-11-26 1988-07-05 Sterling Drug Inc. Isotropic laundry detergents containing polymeric quaternary ammonium salts
EP0339120A1 (en) * 1988-04-29 1989-11-02 Sterling Drug Inc. Isotropic laundry detergents
US4828820A (en) * 1987-01-15 1989-05-09 Warner-Lambert Company Chewable tooth cleaning composition
US5100650A (en) * 1987-06-30 1992-03-31 Warner-Lambert Company Anti-bacterial oral composition containing bis-biguanido hexanes
FI882662A7 (fi) * 1987-07-24 1989-01-25 Lonza Ag Hioma-aineita.
GB8718987D0 (en) * 1987-08-11 1987-09-16 Unilever Plc Agglomerated abrasive material
GB2210265A (en) * 1987-10-02 1989-06-07 Richardson Vicks Ltd Dentifrice compositions
EP0368130B1 (en) 1988-11-09 1994-05-04 The Procter & Gamble Company Oral compositions
YU32490A (en) * 1989-03-13 1991-10-31 Lonza Ag Hydrophobic layered grinding particles
JPH0825861B2 (ja) * 1989-04-24 1996-03-13 サンスター株式会社 歯磨組成物
FR2647012B1 (fr) * 1989-05-18 1991-07-26 Oreal Nouvelles compositions dentifrices a action anti-caries, contenant un fluorure de polymere polycationique
US5225177A (en) * 1990-01-19 1993-07-06 J. M. Huber Corporation Dentifrice abrasives and compositions
GB9008433D0 (en) * 1990-04-12 1990-06-13 Beecham Group Plc Novel compositions
US5011682A (en) * 1990-04-18 1991-04-30 Conopco, Inc. Hypophosphite-containing cotelomers as antitartar agents
US5143719A (en) * 1991-04-16 1992-09-01 Chesebrough-Pond's Usa Co. Anticalculus oral composition containing combinations of organophosphorus polycarboxylate cotelomers and inorganic polyphosphate salts
US5108734A (en) * 1991-07-01 1992-04-28 Colgate-Palmolive Company Prophy mouthfeel dentifrice having low RDA value
US5192533A (en) * 1992-03-25 1993-03-09 Chesebrough-Pond's Usa Co., Division Of Conopco, Inc. Nonirritating antitartar and antiplaque oral compositions
DK0663863T3 (da) * 1992-10-08 1998-04-27 Julius Stephen Csabai Anvendelse af metalglinsende hæmatit som slagmateriale
US5577949A (en) * 1993-07-20 1996-11-26 C. Uyemura & Co., Ltd. Buffing method
US5587156A (en) * 1996-04-18 1996-12-24 Critical Dimension, Incorporated Shaving compositions containing particulate additives
FR2751635B1 (fr) * 1996-07-23 1998-10-02 Rhone Poulenc Chimie Silice compatible avec les aromes, son procede de preparation et compositions dentifrices la contenant
US5849281A (en) * 1996-11-12 1998-12-15 S. C. Johnson & Son, Inc. Method of soap-free shaving
US5855633A (en) * 1997-06-06 1999-01-05 Lockheed Martin Energy Systems, Inc. Lapping slurry
KR100615691B1 (ko) * 1998-12-18 2006-08-25 도소 가부시키가이샤 연마용 부재, 그것을 이용한 연마용 정반 및 연마방법
BR0111226B1 (pt) * 2000-05-30 2013-11-05 Composição oral compreendendo greda branca
EP1731132B1 (en) 2000-10-13 2008-12-10 Block Drug Company, Inc. Dental compositions for hypersensitive teeth
WO2002080939A2 (en) * 2001-01-18 2002-10-17 Genzyme Corporation Ionene polymers and their use as antimicrobial agents
US7354634B2 (en) * 2001-03-30 2008-04-08 Lintec Corporation Composition for forming receiving layer and recording sheet for inkjet printing
JP2002293015A (ja) * 2001-03-30 2002-10-09 Lintec Corp 受理層形成用組成物およびインクジェット用記録シート
GB0126244D0 (en) * 2001-11-01 2002-01-02 Ineos Silicas Ltd Oral compositions
AU2003291087A1 (en) * 2002-11-19 2004-06-15 Genzyme Corporation Ionene oligomers and polymers
RU2347556C2 (ru) † 2003-06-23 2009-02-27 Колгейт-Палмолив Компани Устойчивые композиции для чистки зубов
US8287843B2 (en) * 2003-06-23 2012-10-16 Colgate-Palmolive Company Antiplaque oral care compositions
US20060024245A1 (en) * 2004-07-29 2006-02-02 Cadbury Adams, Llc. Tooth whitening compositions and delivery systems therefor
EP1811944B1 (en) 2004-11-16 2010-09-08 3M Innovative Properties Company Compositions including a caseinate treated dental filler
US8119162B2 (en) 2005-11-10 2012-02-21 Colgate-Palmolive Company Particles that disrupt or impede bacterial adhesion, related compositions and methods
JP5336354B2 (ja) * 2006-04-05 2013-11-06 クラフト・フーズ・グローバル・ブランズ・エルエルシー 齲食に対する、リン酸カルシウム錯体の効果
US20090186090A1 (en) * 2007-04-30 2009-07-23 Colgate-Palmolive Oral Care Composition to Reduce or Eliminate Dental Sensitivity
US20080267891A1 (en) * 2007-04-30 2008-10-30 Colgate-Palmolive Company Oral Care Composition To Reduce Or Eliminate Dental Sensitivity
EP2229130A2 (en) * 2007-12-13 2010-09-22 3M Innovative Properties Company Remineralizing compositions and methods
RU2543656C2 (ru) * 2008-02-08 2015-03-10 Колгейт-Палмолив Компани Продукт для ухода за полостью рта и способы его применения и производства
EP2249787B1 (en) * 2008-02-08 2017-07-19 Colgate-Palmolive Company Oral care product and methods of use and manufacture thereof
WO2009100262A2 (en) * 2008-02-08 2009-08-13 Colgate-Palmolive Company Oral care methods and systems
US8790707B2 (en) 2008-12-11 2014-07-29 3M Innovative Properties Company Surface-treated calcium phosphate particles suitable for oral care and dental compositions
WO2010134904A1 (en) 2009-05-18 2010-11-25 Colgate-Palmolive Company Oral compositions containing polyguanidinium compounds and methods of manufacture and use thereof
US11052029B2 (en) * 2009-06-16 2021-07-06 W. R. Grace & Co.-Conn. Cation compatible metal oxides and oral care compositions containing the metal oxides
AR079639A1 (es) 2009-12-17 2012-02-08 Colgate Palmolive Co Composicion de pasta de dientes anti-erosiva
RU2559781C2 (ru) 2010-01-29 2015-08-10 Колгейт-Палмолив Компани Средство для полости рта по уходу за чувствительной эмалью
DE102010034194B9 (de) * 2010-08-12 2018-12-27 Kulzer Gmbh Verwendung von Kleselsäure(n) zur Eigenschaftsverbesserung von Dentalmaterial und entsprechende Verfahren
DE102017111415A1 (de) 2017-05-24 2018-11-29 Epcos Ag Elektrisches Bauteil mit Sicherungselement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3151027A (en) * 1961-06-07 1964-09-29 Procter & Gamble Abrasive for dentifrice composition
US3591675A (en) * 1969-06-20 1971-07-06 Herbert Brilliant Composition and method for preventing formation of dental plaque
US3624120A (en) * 1969-12-22 1971-11-30 Procter & Gamble Quaternary ammonium salts of cyclic siloxane polymers
US3703583A (en) * 1971-06-10 1972-11-21 Lever Brothers Ltd Anticalculus formulations
US3749767A (en) * 1971-09-30 1973-07-31 Colgate Palmolive Co Oral preparation containing unsymmetrical oligoquaternary ammonium compounds
US3804946A (en) * 1972-01-03 1974-04-16 Colgate Palmolive Co Dentifrices containing crystalline silica
US3955942A (en) * 1972-04-11 1976-05-11 Colgate-Palmolive Company Abrasive agglomerates of abrasive subparticles and binder material
CA1063357A (en) * 1974-05-21 1979-10-02 James J. Benedict Abrasive composition

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159280A (en) 1976-09-15 1979-06-26 J. M. Huber Corporation Therapeutic dentifrices in unlined container and methods
US4421527A (en) 1977-12-20 1983-12-20 J. M. Huber Corporation High fluoride compatibility dentifrice abrasives and compositions
GB2144631A (en) * 1983-06-30 1985-03-13 Shiken Ltd Dentifrice
US6143281A (en) * 1987-03-31 2000-11-07 Smithkline Beecham P.L.C. Dentifrice compositions
WO2010114540A1 (en) * 2009-04-01 2010-10-07 Colgate-Palolive Company Dentifrice compositions and methods for treating and preventing damage to tooth surfaces
AU2009343755B2 (en) * 2009-04-01 2013-05-09 Colgate-Palolive Company Dentifrice compositions and methods for treating and preventing damage to tooth surfaces
TWI422392B (zh) * 2009-04-01 2014-01-11 Colgate Palmolive Co 用於治療及預防牙齒表面損傷之牙劑組成物與方法
RU2517332C2 (ru) * 2009-04-01 2014-05-27 Колгейт-Палмолив Компани Композиции средства для ухода за зубами и способы лечения и предотвращения повреждения поверхностей зуба
US8980229B2 (en) 2009-04-01 2015-03-17 Colgate-Palmolive Company Dentifrice compositions and methods for treating and preventing damage to tooth surfaces
MD4453C1 (ro) * 2015-04-27 2017-07-31 Институт Химии Академии Наук Молдовы Pastă de dinţi şi procedeu de obţinere a acesteia
US20180296447A1 (en) * 2015-04-28 2018-10-18 Imerys Filtration Minerals, Inc. Biocidal compositions and related methods

Also Published As

Publication number Publication date
US4110083A (en) 1978-08-29
DE2522046C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-09-29
FR2271840B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1978-11-10
JPS609484B2 (ja) 1985-03-11
IT1036898B (it) 1979-10-30
DE2522046A1 (de) 1975-12-04
JPS5132743A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-03-19
FR2271840A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-12-19
US4157387A (en) 1979-06-05
CA1063357A (en) 1979-10-02

Similar Documents

Publication Publication Date Title
GB1506045A (en) Abrasive composition
GB1429746A (en) Dentifrices
US4515772A (en) Oral compositions
US4314990A (en) Toothpaste compositions
US4141969A (en) Dentifrices containing amorphous silica
GB1298130A (en) Dentifrice composition
US5009882A (en) Use of a carboxy starch polymer to inhibit plaque without tooth staining
US5310542A (en) Oral hygiene compositions containing antiplaque agents
US4647452A (en) Oral compositions of salicylamides and zinc salts for the synergistic inhibition of dental plaque
CA1077398A (en) Alumina and anionic phosphate ester for toothpaste
CA1269332A (en) Anti-caries composition
JPS5824408B2 (ja) 透明ねり歯みがきの製造方法
US4915937A (en) Dental antihydrolysis agent
GB2149661A (en) Dentifrices
US4828833A (en) Dentifrice having decreased abrasivity
US4772461A (en) Oral compositions
EP0551675A1 (en) Oral hygiene compositions containing antiplaque agents
GB1186706A (en) Dentifrice Compositions
US4425324A (en) Hazed toothpaste
US4806339A (en) Oral compositions
CA1333885C (en) Toothpaste
US4407788A (en) Dentifrice
JPH021805B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB1407787A (en) Dentifrices
US4562063A (en) Astringent gel dentifrice

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
704A Declaration that licence is not available as of right for an excepted use (par. 4a/1977)
PCNP Patent ceased through non-payment of renewal fee