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US3846400A Expired / Lapsed US ⏱️ 0.0 years remaining

Novel process for producing antibiotics bleomycin

Assignee: Microbial Chemistry Research Foundation
•
Filing: 1972-09-21
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Granted: 1974-11-05
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Expires: 1992-09-21
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Abstract

Abstract GROUP AND AT LEAST ONE BASIC GROUP SELECTED FROM AMINO, IMINO, GUANIDINO, AMIDINO AND SULFONIUM GROUPS AND NITROGEN-CONTAINING CYCLIC COMPOUNDS, OR IN THE PRESENCE OF A COMPOUND CONVERTIBLE IN THE CULTURE LIQUOR TO SUCH AMINO COMPOUND AS MENTIONED ABOVE, THEREBY SELECTIVELY PRODUCING A KNOWN OR NOVEL BLEOMYCIN COMPONENT CORRESPONDING TO THE SAID AMINO COMPOUND OR TO AN AMINO COMPOUND DERIVED FROM THE ABOVE-MENTIONED COMPOUND, AND THEN THE KNOWN OR NOVEL BLEOMYCIN IS RECOVERED BY KNOWN MEANS FROM THE CULTURE MEDIUM. A novel process for producing antibiotics bleomycins by innoculating and aerobically culturing in a nutrient sourcecontaining medium a bleomycin-producing strain belonging to the actinomyces, wherein the culture is effected in the presence of an amino compound having at least one

Inventors

  • 👤 H Umezawa
  • 👤 K Maeda
  • 👤 A Fujii
  • 👤 N Shimada
  • 👤 T Takita
  • 👤 Y Nakayama
  • 👤 H Chimura

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 18:06
CPC Classifications
C; C07; C07K; C07K9/00; C07K9/001; C07K9/003; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S930/00; Y10S930/01; Y10S930/19

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 8 words
BELOMYCINS HAVING A STRUCTURE REPRESENTED BY THE FORMULA,
Claim 2
Dependent Claim 8 words
BELOMYCINS HAVING A STRUCTURE REPRESENTED BY THE FORMULA,

References Cited (Backward Citations)

DE2006446A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-11-04 1978-05-06 1978-11-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-11-04 1982-05-06 1982-11-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-11-04 1986-05-06 1986-11-05 $7700.00 Window Closed / Lapsed

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