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US2485928A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of making siloxanes

Assignee: Dow Chemical Co
•
Filing: 1947-10-08
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Granted: 1949-10-25
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Expires: 1967-10-08
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Abstract

No abstract record available.

Inventors

  • 👤 Philip C Servais

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 16:30
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US2389477A Cited
US2377689A Cited
US2405988A Cited
US2421653A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1952-10-24 1953-04-25 1953-10-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1956-10-24 1957-04-25 1957-10-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1960-10-24 1961-04-25 1961-10-25 $7700.00 Window Closed / Lapsed

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