IP Library Granted Patent US 12,496,535
Granted Patent B2
US 12,496,535 · App. 17/980,168 · Granted Dec 16, 2025

Laboratory glassware

Inventor: Rolf Winter (Portland, OR)
B01D5/0063
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Quick Facts
Patent No.
US 12,496,535
App. No.
17/980,168
Granted
Dec 16, 2025
Kind
B2
Abstract

A waterless, non-jacketed, laboratory reflux condenser for use in association with a reaction vessel, including: (a) a top portion, wherein the top portion is adapted to serve as a vapor vent; (b) a bottom portion, wherein the bottom portion is adapted for releasable securement to a reaction vessel; (c) a primary condenser; (d) a secondary condenser; and (e) wherein the primary condenser is preferably in-line with the top and bottom portions of the reflux condenser, and the secondary condenser is preferably offset relative to the primary condenser.

Claims (29)

1 . A waterless, non-jacketed, laboratory reflux condenser for use in association with a reaction vessel, comprising:

a top portion, wherein the top portion is adapted to serve as a vapor vent;

a bottom portion, wherein the bottom portion is adapted for releasable securement to a reaction vessel;

a primary condenser;

a secondary condenser; and

wherein the primary condenser is optionally in-line with the top and bottom portions of the reflux condenser, and the secondary condenser is optionally offset relative to the primary condenser, and the primary condenser achieves cooling through air convection without any water-cooling connections.

2 . The reflux condenser according to claim 1 , wherein the primary condenser includes a smooth columnar condenser/portion, a Vigreux condenser/portion and/or one or more bulbous portions.

3 . The reflux condenser according to claim 1 , wherein the secondary condenser includes a smooth columnar condenser/portion, a Vigreux condenser/portion and/or one or more bulbous portions.

4 . The reflux condenser according to claim 1 , further comprising a tertiary condenser.

5 . The reflux condenser according to claim 4 , wherein the tertiary condenser includes a smooth columnar condenser/portion, a Vigreux condenser/portion and/or one or more bulbous portions.

6 . The reflux condenser according to claim 4 , further comprising a quaternary condenser.

7 . The reflux condenser according to claim 6 , wherein the quaternary condenser includes a smooth columnar condenser/portion, a Vigreux condenser/portion and/or one or more bulbous portions.

8 . The reflux condenser according to claim 6 , further comprising a quinary condenser.

9 . The reflux condenser according to claim 8 , wherein the quinary condenser includes a smooth columnar condenser/portion, a Vigreux condenser/portion and/or one or more bulbous portions.

10 . The reflux condenser according to claim 1 , wherein the bottom portion includes at least one condensate collection finger attached thereto.

11 . The reflux condenser according to claim 8 , wherein each one of the condensers includes an aperture at upper and lower portions thereof.

12 . A waterless, non-jacketed, laboratory reflux condenser for use in association with a reaction vessel, comprising:

a top portion, wherein the top portion is adapted to serve as a vapor vent;

a bottom portion, wherein the bottom portion is adapted for releasable securement to a reaction vessel;

a primary condenser; a secondary condenser; a tertiary condenser; a quaternary condenser; and a quinary condenser; and

wherein the primary condenser is optionally in-line with the top and bottom portions of the reflux condenser, and the secondary, tertiary, quaternary, and quinary condensers are optionally offset relative to the primary condenser, and wherein the condenser achieves cooling through air convection without any water-cooling connections.

13 . The reflux condenser according to claim 12 , wherein the primary condenser, the secondary condenser, the tertiary condenser, the quaternary condenser, and the quinary condenser each include a smooth columnar condenser/portion, a Vigreux condenser/portion and/or one or more bulbous portions.

14 . The reflux condenser according to claim 12 , wherein the bottom portion includes at least one condensate collection finger/drip tube attached thereto.

15 . The reflux condenser according to claim 12 , wherein each one of the condensers includes an aperture at upper and lower portions thereof.

16 . A waterless, non-jacketed, laboratory reflux condenser for use in association with a reaction vessel, consisting of:

a top portion, wherein the top portion is adapted to serve as a vapor vent;

a bottom portion, wherein the bottom portion is adapted for releasable securement to a reaction vessel;

a primary condenser; a secondary condenser; a tertiary condenser; a quaternary condenser; and a quinary condenser; and

wherein the primary condenser is in-line with the top and bottom portions of the reflux condenser, and the secondary, tertiary, quaternary, and quinary condensers are offset relative to the primary condenser.

Continuity (1)
Related Publication 20240149187A1 · May 9, 2024
References Cited (47)
US 2251185A · Carter et al. · 1941 [cited by applicant]
US 2427142A · Hornbacher et al. · 1947 [cited by applicant]
US 2537942A · Martin · 1951 [cited by applicant]
US 2539082A · Hustinx · 1951 [cited by applicant]
US 2573807A · Piros et al. · 1951 [cited by applicant]
US 3257170A · Marcus et al. · 1966 [cited by applicant]
US 3395083A · Gilmont · 1968 [cited by applicant]
US 3607662A · Glover · 1971 [cited by applicant]
US 3744656A · Wolfram · 1973 [cited by applicant]
US 3907683A · Gilmont · 1975 [cited by applicant]
US 3927342A · Bode et al. · 1975 [cited by applicant]
US 4072243A · Conant et al. · 1978 [cited by applicant]
US 4305382A · Nott · 1981 [cited by applicant]
US 4333523A · Hartzler · 1982 [cited by applicant]
US 4724048A · Helmich · 1988 [cited by examiner]
US 4770854A · Lyman · 1988 [cited by applicant]
US D307869S · Miskinis · 1990 [cited by applicant]
US D312128S · Headley · 1990 [cited by applicant]
US 5178817A · Yamada et al. · 1993 [cited by applicant]
US 5271085A · Carballo · 1993 [cited by applicant]
US 5478478A · Griswold · 1995 [cited by applicant]
US 5591310A · Olrik · 1997 [cited by applicant]
US 5823391A · Klauke et al. · 1998 [cited by applicant]
US 5931323A · Wilkinson et al. · 1999 [cited by applicant]
US 6006960A · Gross · 1999 [cited by applicant]
US 6332494B1 · Bodas et al. · 2001 [cited by applicant]
US 6557351B1 · Ghedini et al. · 2003 [cited by applicant]
US 8080092B2 · Hecht et al. · 2011 [cited by applicant]
US D655801S · Russell et al. · 2012 [cited by applicant]
US D787034S · Showole · 2017 [cited by applicant]
US D802108S · Birchler et al. · 2017 [cited by applicant]
US 9897353B2 · Szabo et al. · 2018 [cited by applicant]
US D823253S · Chen et al. · 2018 [cited by applicant]
US 10471371B2 · Conneway et al. · 2019 [cited by applicant]
US D901386S · Chen et al. · 2020 [cited by applicant]
US 11045742B2 · Wunz et al. · 2021 [cited by applicant]
US D930185S · Winter · 2021 [cited by applicant]
US 11491479B2 · Winter · 2022 [cited by applicant]
US 20050132780A1 · Keen · 2005 [cited by applicant]
US 20120107196A1 · Perlman · 2012 [cited by applicant]
US 20190112567A1 · Scibek et al. · 2019 [cited by applicant]
US 20190127674A1 · Lacey · 2019 [cited by applicant]
US 20190283191A1 · Singh · 2019 [cited by examiner]
US 20220184521A1 · Wen · 2022 [cited by examiner]
CN 110772827A · 2020 [cited by examiner]
WO WO2021047537A1 · 2021 [cited by examiner]
English machine translation of CN 110772827 (Year: 2020). [cited by examiner]