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특허 상세정보

Appartus and method for determining impurities in liquids

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01N-021/00    B01L-011/00   
미국특허분류(USC) 422/58 ; 422/681 ; 422/101 ; 210/238
출원번호 US-0580828 (1990-09-11)
발명자 / 주소
인용정보 피인용 횟수 : 19  인용 특허 : 0
초록

An apparatus for determining impurities in liquids has a funnel having a first end and a smaller diameter outlet having an outer periphery. A funnel holder releasably holds the funnel. A portable test film carrier, removably engageable with the funnel holder, holds the test film. The test film carrier includes a mechanism for removably securing and releasably tensioning the test film within the test film carrier. A uniform test area is provided on the test film. The apparatus provides a high degree of test result reproducibility.

대표
청구항

An apparatus for determining impurities in liquids, comprising: a funnel having a first end and a smaller diameter outlet having an outer periphery; funnel holding means, interlockingly, removably engaged with the funnel, for holding the funnel; test film carrying means, removably engaged with the funnel holding means, portably carrying a test film; securing and tensioning means, disposed within the test film carrying means, for removably securing and releasably tensioning the test film; defining means for defining a uniform test area on the test film su...

이 특허를 인용한 특허 피인용횟수: 19

  1. Ruprecht, John. Bottle base. USP201712D804311.
  2. Ruprecht, John. Bottle with filter and infusion base. USP2018069988177.
  3. Johnsen, James B.; Oien, Hal J.. Container for holding endodontic instruments. USP2012078230994.
  4. Oien, Hal J.; Johnsen, James B.. Dental instrument servicing system. USP2016109474584.
  5. Bradford, Scott Hugh; Casucci, Marco; Menegon, Italo Renzo; Manfredini Taube, Sara; Mathias Tingstrom, Torsten Rickard; Van Faasen, Joel Graham. Drop filter. USP201401D697170.
  6. Bradford, Scott Hugh; Van Faasen, Joel Graham. Drop filter and stand. USP201401D697172.
  7. Jackson, Beth; Cooper, David; Bradford, Scott. Drop filter engine frame. USP201412D719633.
  8. Cooper, Beth; Cooper, David; Bradford, Scott. Drop filter stand. USP201408D710970.
  9. Jackson, Beth; Cooper, David; Bradford, Scott. Drop shaped filter carrier. USP201408D710971.
  10. Ruprecht, John; Kinsey, Mitchell James. Fluid filter housing. USP201410D714901.
  11. Ruprecht, John. Liquid filter housing. USP201504D726870.
  12. Ruprecht, John. Liquid filter housing. USP201606D758528.
  13. Ruprecht, John. Liquid filter housing. USP201612D773606.
  14. McDonald, Jonathan; Rinker, Edward B.. Mechanisms and systems for directing water flow in a fluid container. USP2018049937446.
  15. Oien, Hal J.; Johnsen, James B.. Method and apparatus for cleaning and storing endodontic tools. USP2017049629701.
  16. Ruprecht, John. Open-ended filter housing. USP201605D756483.
  17. Johnson, Philip E.; Formica, Claudio; Greco, Enrico; Brown, Michael L.; Hacker, John R.. Spin-on filter assembly and methods. USP2012108293103.
  18. Ruprecht, John. Water filter connector assembly. USP201601D747785.
  19. Ruprecht, John. Water filter mount assembly. USP201603D751170.