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US3465825A Expired / Lapsed US ⏱️ 0.0 years remaining

Aqueous cementing composition adaptable to high turbulent flow and low fluid loss to porous contacting surfaces,and method of cementing a well using same

Assignee: Schlumberger Technology Corp
•
Filing: 1966-12-02
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Granted: 1969-09-09
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Expires: 1986-12-02
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Abstract

No abstract record available.

Inventors

  • 👤 Fred E Hook
  • 👤 Clare H Kucera
  • 👤 L J Scott Jr

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 03:56
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/42; C09K8/46; C04; C04B; C04B24/00; C04B24/12; C04B24/16; C04B24/20; C04B24/22; C04B24/24; C04B24/26; C04B28/00; C04B28/02; C09K8/467; C09K8/487; E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/138; C04B2103/00; C04B2103/46

Claims Analysis

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References Cited (Backward Citations)

US2580565A Cited
US2709661A Cited
US2690975A Cited
US3277162A Cited
US3359225A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1972-09-08 1973-03-10 1973-09-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1976-09-08 1977-03-10 1977-09-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1980-09-08 1981-03-10 1981-09-09 $7700.00 Window Closed / Lapsed

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