Patent US4617939A successfully refreshed from Google Patents.
← Back to Patent Explorer
US2607789A Expired / Lapsed US ⏱️ 0.0 years remaining

N-alpha mercapto acetyl amino aryl compounds

Assignee: ENDO PRODUCTS Inc
•
Filing: 1947-12-18
•
Granted: 1952-08-19
•
Expires: 1967-12-18
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Weiss Ulrich

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 18:23
CPC Classifications
C; C07; C07C; C07C323/00; C07C323/50; C07C323/51; C07C323/60

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 8 words
COMPOUNDS OF THE GROUP HAVING THE TYPE FORMULA:
Claim 2
Dependent Claim 8 words
COMPOUNDS OF THE GROUP HAVING THE TYPE FORMULA:

References Cited (Backward Citations)

DE210886C Cited
US2036208A Cited
GB555141A Cited
US2451841A Cited
US2270183A Cited
US2384811A Cited
US2412700A Cited
US2431910A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1955-08-19 1956-02-18 1956-08-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1959-08-19 1960-02-18 1960-08-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1963-08-19 1964-02-18 1964-08-19 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag