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US3552975A Expired / Lapsed US ⏱️ 0.0 years remaining

Hop flavors for malt beverages and the like

Assignee: Kalamazoo Spice Extraction Co
•
Filing: 1969-06-11
•
Granted: 1971-01-05
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Expires: 1989-06-11
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Abstract

Abstract PROCESS FOR PRODUCING 4-DEOXYTETRAHYDROHUMULONE FROM LUPULONE BY HYDROGENOLYSIS THEREOF AFTER DOWNWARD ADJUSTMENT OF PH INTO THE ACID RANGE, OPTIONAL SUBSEQUENT OXYGENATION TO TETRAHYDROHUMULONE, AND OPTIONAL ISOMERIZATION AND REDUCTION TO PRODUCE HEXAHYDROISOHUMULONE; HEXAHYDROISOHUMULONE ITSELF; USE OF HEXAHYDROISOHUMULONE, IN BEVERAGE FLAVORING; BEVERAGES FLAVORED THEREWITH; AND EMPLOYMENT OF THE PORTION OF THE NON-VOLATILE NONISOMERIZABLE HOP EXTRACT FRACTION WHICH DISSOLVES IN WATER AT A PH OF AT LEAST 9 AS STARTING MATERIAL IN THE FIRST-MENTIONED PRODUCTION PROCESSES; USE OF TETRAHYDROISOHUMULONE IN BEVERAGE FLAVORING, ESPECIALLY BY ISOMERIZING TETRAHYDROHUMULONE IN THE BEVERAGE; BEVERAGES AND ESPECIALLY MALT BEVERAGES SO FLAVORED.

Inventors

  • 👤 Leonard R Worden
  • 👤 Paul H Todd Jr

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 06:58
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/587; C07C49/703; C07C49/707; C07C45/00; C07C45/27; C07C45/29; C07C45/296; C07C45/61; C07C45/62; C07C45/64; C07C45/67; C07C45/673; C12; C12C; C12C3/00; C12C3/12; C12C5/00; C12C5/02; C12C5/026

Claims Analysis

Total Claims: 0
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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) 1974-01-04 1974-07-06 1975-01-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-01-04 1978-07-06 1979-01-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-01-04 1982-07-06 1983-01-05 $7700.00 Window Closed / Lapsed

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