Patent US4595403A successfully refreshed from Google Patents.
US4595403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange element
Assignee: HO+NSHUSEISHI KK
•
Filing: 1984-08-29
•
Granted: 1986-06-17
•
Expires: 2004-08-29
Abstract
Abstract The present invention provides a heat exchange element comprising a molded product of a paper-like material made of ceramic fibers as a matrix, the interstices among the ceramic fibers being uniformly filled with molecular sieve particulates having an average particle diameter of 5.5 mu or less, the ceramic fibers and the molecular sieve particulates being bound by a silicic acid gel.
Inventors
- 👤 Yoshiharu Sago
- 👤 Masaji Kurosawa
- 👤 Nobutaka Kanamori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:20
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411; F24F3/1423; C; C04; C04B; C04B30/00; C04B30/02; F28; F28F; F28F21/00; F28F21/04; F24F2203/00; F24F2203/10; F24F2203/1032; F24F2203/1036; F24F2203/1056; F24F2203/1064; F24F2203/1068; F24F2203/1084
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
66 words
A heat exchange element comprising a molded product from paper-like material made of ceramic fibers as a matrix, wherein interstices among the ceramic fibers are uniformly filled with 100-170 g/m 2 of molecular sieve particulates having an average particle diameter of 5.5μ or less, the ceramic fibers and the molecular sieve particulates being bound by a silicic acid gel derived from collodial silica or ethyl silicate.
Claim 2
Dependent Claim
66 words
A heat exchange element comprising a molded product from paper-like material made of ceramic fibers as a matrix, wherein interstices among the ceramic fibers are uniformly filled with 100-170 g/m 2 of molecular sieve particulates having an average particle diameter of 5.5μ or less, the ceramic fibers and the molecular sieve particulates being bound by a silicic acid gel derived from collodial silica or ethyl silicate.
Claim 3
Dependent Claim
29 words
A heat exchange element according to claim 1 wherein the molecular sieve particulates do not substantially contain either coarse grit or agglomerated particles having particle diameters greater than 10μ.
Claim 4
Dependent Claim
21 words
A heat exchange element according to claim 10 wherein the diameters of pores of the molecular sieve particulates are 3-13 angstroms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-16 | 1989-12-16 | 1990-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-16 | 1993-12-16 | 1994-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-16 | 1997-12-16 | 1998-06-17 | $7700.00 | Window Closed / Lapsed |