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US2917468A Expired / Lapsed US ⏱️ 0.0 years remaining

Surface active polymeric trimethylene oxide derivatives with polyether sidechains, and process for producing same

Assignee: Bayer AG
•
Filing: 1956-03-21
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Granted: 1959-12-15
•
Expires: 1976-03-21
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Abstract

No abstract record available.

Inventors

  • 👤 Schnell Hermann
  • 👤 Nentwig Joachim
  • 👤 Hintzmann Karl
  • 👤 Raichle Karl
  • 👤 Biedermann Wolfgang

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 08:59
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K47/00; A61K47/06; A61K47/08; A61K47/10; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K8/86; A61K9/00; A61K9/0012; A61K9/0014; C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/16; C08G65/18; C08G65/22; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2609; C08G65/2642; C08G65/2645; C08G65/2669; C11; C11D; C11D1/00; C11D1/008; D; D06; D06P; D06P1/00; D06P1/44; D06P1/60; D06P1/613; D06P1/6131; C10; C10M; C10M2201/00; C10M2201/02; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/17

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 13 words
POLYMERIC TRIMETHYLENE OXIDE DERIVATIVES WITH POLYETHER SIDE CHAIMS ACCORDING TO THE GENERAL FORMULA:
Claim 2
Dependent Claim 13 words
POLYMERIC TRIMETHYLENE OXIDE DERIVATIVES WITH POLYETHER SIDE CHAIMS ACCORDING TO THE GENERAL FORMULA:

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1962-12-14 1963-06-15 1963-12-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1966-12-14 1967-06-15 1967-12-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1970-12-14 1971-06-15 1971-12-15 $7700.00 Window Closed / Lapsed

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