US3306864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenol formaldehyde-urea resin component binder
Assignee: Hooker Chemical Corp
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Filing: 1962-11-29
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Granted: 1967-02-28
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Expires: 1982-11-29
Abstract
No abstract record available.
Inventors
- 👤 Edward J Lang
- 👤 Frank S Grazen
- 👤 Frank W Less
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:14
CPC Classifications
C; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G14/08; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A BINDER COMPOSITION COMPRISING A LIQUID ONE-STEP PHENOL FORMALDEHYDE RESIN, A UREA RESIN COMPONENT SELECTED FROM THE GROUP CONSISTING OF UREA FORMALDEHYDE AND THIOUREA FORMALDEHYDE, AND AN ACID SALT CURING ACCELERATOR, WHEREIN THE MOLAR RATIO OF FORMALDEHYDE TO PHENOL IN THE PHENOL-FORMALDEHYDE RESIN IS BETWEEN ABOUT 1.5:1 AND ABOUT 2.5:1, AND THE MOLAR RATIO OF UREA AND/OR THIOUREA TO FORMALDEHYDE IN THE UREA RESIN COMPONENT IS BETWEEN ABOUT 1:1 AND ABOUT 1:5.
Claim 2
Dependent Claim
72 words
A BINDER COMPOSITION COMPRISING A LIQUID ONE-STEP PHENOL FORMALDEHYDE RESIN, A UREA RESIN COMPONENT SELECTED FROM THE GROUP CONSISTING OF UREA FORMALDEHYDE AND THIOUREA FORMALDEHYDE, AND AN ACID SALT CURING ACCELERATOR, WHEREIN THE MOLAR RATIO OF FORMALDEHYDE TO PHENOL IN THE PHENOL-FORMALDEHYDE RESIN IS BETWEEN ABOUT 1.5:1 AND ABOUT 2.5:1, AND THE MOLAR RATIO OF UREA AND/OR THIOUREA TO FORMALDEHYDE IN THE UREA RESIN COMPONENT IS BETWEEN ABOUT 1:1 AND ABOUT 1:5.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |