Patent US2231132A successfully refreshed from Google Patents.
← Back to Patent Explorer
US2231132A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for treating paper

Assignee: Industrial Rayon Corp
•
Filing: 1938-08-11
•
Granted: 1941-02-11
•
Expires: 1958-08-11
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Louis E Lovett

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 17:36
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/83; B29C66/836; B29C66/8362; B29C59/00; B29C59/02; B29C59/04; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C65/32; B29C66/01; B29C66/05; B29C66/306; B29C66/3062; B29C66/30621; B29C66/40; B29C66/41; B29C66/43; B29C66/81; B29C66/816; B29C66/8161; B29C66/84; B29C66/861; B29C67/00; B29C67/0044; B31; B31F; B31F1/00; B31F1/07; B31F7/00; B31F7/006; B44; B44B; B44B5/00; B44B5/02; B44B5/026; B44B5/028; B29C66/70; B29C66/71; B29K; B29K2001/00; B29K2001/08; B29K2001/12; B31F2201/00; B31F2201/07; B31F2201/0707; B31F2201/0715; B31F2201/0784; B31F2201/0789; Y; Y10; Y10T; Y10T156/00; Y10T156/18

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1944-02-11 1944-08-12 1945-02-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1948-02-11 1948-08-12 1949-02-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1952-02-11 1952-08-12 1953-02-11 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag