US4110164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agglomerated fibrous cellulose
Assignee: Danisco Finland Oy
•
Filing: 1977-04-19
•
Granted: 1978-08-29
•
Expires: 1997-04-19
Abstract
Abstract An agglomerated fibrous ion exchange cellulose composite wherein the cellulose is embedded in a hydrophobic polymer and relatively large portions of the cellulose are free to adsorb charged macro-molecules.
Inventors
- 👤 Robert F. Sutthoff
- 👤 Robert V. MacAllister
- 👤 Khaja Khaleeluddin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:06
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/28; B01J20/28014; B01J20/2803; B01J20/28023; B01J20/28026; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/34; C08L; C08L1/00; C08L1/08; C08L101/00; C12; C12N; C12N11/00; C12N11/02; C12N11/10; C12N11/12; C12P; C12P19/00; C12P19/24; D; D06; D06M; D06M16/00; D06M16/003
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
27 words
An agglomerated fibrous ion exchange cellulose composite wherein the cellulose is embedded in a hydrophobic polymer and relatively large portions of the cellulose have enzymes adsorbed thereon.
Claim 2
Dependent Claim
27 words
An agglomerated fibrous ion exchange cellulose composite wherein the cellulose is embedded in a hydrophobic polymer and relatively large portions of the cellulose have enzymes adsorbed thereon.
Claim 3
Dependent Claim
17 words
An agglomerated fibrous cellulose composite as defined in claim 1, wherein the fibrous cellulose possesses anion-exchange properties.
Claim 4
Dependent Claim
16 words
An agglomerated fibrous cellulose composite as defined in claim 2, wherein the hydrophobic polymer is polystyrene.
Claim 5
Dependent Claim
17 words
An agglomerated fibrous cellulose composite as defined in claim 3, wherein the composite contains a densification agent.
Claim 6
Dependent Claim
27 words
An agglomerated fibrous cellulose composite as defined in claim 3, wherein the densification agent is selected from the group consisting powdered metal oxides, silicates and mixtures thereof.
Claim 7
Dependent Claim
21 words
An agglomerated fibrous cellulose composite as defined in claim 2, wherein glucose isomerase is adsorbed on the fibrous anion exchange cellulose.
Claim 8
Dependent Claim
17 words
An agglomerated fibrous cellulose composite as defined in claim 6, wherein the anion exchange cellulose is DEAE-cellulose.
Claim 9
Independent Claim
64 words
A method for preparing an agglomerated fibrous ion exchange cellulose composite having enzymes adsorbed thereon comprising forming a solution of a hydrophobic polymer and an organic solvent, mixing with the solution of the hydrophobic polymer fibrous ion exchange cellulose, removing the solvent from said mixture, forming an agglomerated composite therefrom and adsorbing enzymes on at least a portion of the cellulose of said composite.
Claim 10
Independent Claim
64 words
A method for preparing an agglomerated fibrous ion exchange cellulose composite having enzymes adsorbed thereon comprising forming a solution of a hydrophobic polymer and an organic solvent, mixing with the solution of the hydrophobic polymer fibrous ion exchange cellulose, removing the solvent from said mixture, forming an agglomerated composite therefrom and adsorbing enzymes on at least a portion of the cellulose of said composite.
Claim 11
Dependent Claim
22 words
A method for preparing an agglomerated fibrous ion exchange cellulose composite as defined in claim 8, wherein the hydrophobic polymer is polystyrene.
Claim 12
Independent Claim
51 words
A method for preparing an agglomerated fibrous ion exchange cellulose composite having enzymes adsorbed thereon comprising heating a hydrophobic polymer to a plastic state, mixing therewith fibrous ion exchange cellulose, forming an agglomerated composite from the mixture and adsorbing enzymes on at least a portion of the cellulose of said composite.
Claim 13
Independent Claim
51 words
A method for preparing an agglomerated fibrous ion exchange cellulose composite having enzymes adsorbed thereon comprising heating a hydrophobic polymer to a plastic state, mixing therewith fibrous ion exchange cellulose, forming an agglomerated composite from the mixture and adsorbing enzymes on at least a portion of the cellulose of said composite.
Claim 14
Dependent Claim
22 words
A method for preparing an agglomerated fibrous ion exchange cellulose composite as defined in claim 10, wherein the hydrophobic polymer is polystyrene.
Claim 15
Dependent Claim
43 words
An agglomerated fibrous ion exchange cellulose composite as defined in claim 1, wherein the particle size of the composite is such that the composite will pass through a No. 20 U.S. mesh screen and be retained on a No. 50 U.S. mesh screen.
Claim 16
Dependent Claim
32 words
An agglomerated fibrous ion exchange cellulose composite as defined in claim 1, wherein the hydrophobic polymer is selected from the group consisting of malamine formaldehyde resins, epoxy resins, polystyrene and mixtures thereof.
Claim 17
Dependent Claim
33 words
A column or bed of agglomerates of a fibrous ion exchange cellulose composite wherein the cellulose is embedded in a hydrophobic polymer and relatively large portions of the cellulose have enzymes adsorbed thereon.
Claim 18
Dependent Claim
33 words
A column or bed of agglomerates of a fibrous ion exchange cellulose composite wherein the cellulose is embedded in a hydrophobic polymer and relatively large portions of the cellulose have enzymes adsorbed thereon.
Claim 19
Dependent Claim
25 words
A column or bed of agglomerates of a fibrous ion exchange cellulose composite as defined in claim 14, wherein the fibrous cellulose possesses anion-exchange properties.
Claim 20
Dependent Claim
24 words
A column or bed of agglomerates of a fibrous ion exchange cellulose composite as defined in claim 15, wherein the hydrophobic polymer is polystyrene.
Claim 21
Dependent Claim
25 words
A column or bed of agglomerates of a fibrous ion exchange cellulose composite as defined in claim 16, wherein the composite contains a densification agent.
Claim 22
Dependent Claim
29 words
A column or bed of agglomerates of a fibrous ion exchange cellulose composite as defined in claim 15, wherein glucose isomerase is adsorbed on the fibrous anion exchange cellulose.
References Cited (Backward Citations)
GB910202A
Cited
US3708397A
Cited
US3788945A
Cited
US3909354A
Cited
US3838007A
Cited
US3823133A
Cited
US3956065A
Cited
US3947325A
Cited
US4033817A
Cited
US4029546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |