Synthetic fireplace log
Abstract
Abstract SYNTHETIC FIREPLACE LOGS ARE PROVIDED IN THE FORM OF ELONGATED, INDURATED BODIES COMPOSED OF A UNIFORM MIXTURE COMPRISING CHARCOAL (OR CHARCOAL AND COAL), SAWDUST AND BINDER MATERIAL. PARTICULAR COMPOSITIONS ARE EMPLOYED WHICH RESULT IN EASILY IGNITABLE, CLEAN, STRONG LOGS OF CONTROLLED DENSITY AND BURNING CHARACTERISTICS APPROXIMATING THOSE OF NATURAL WOODS. THE OUTER LONGITUDINAL SURFACE OF THE LOG IS MADE UP OF A SERIES OF LONGITUDINALLY EXTENDING RIDGES AND VALLEYS WHICH INCREASE THE SURFACE AREA, THE RIDGES HAVING AT LEAST ONE SHARP LONGITUDINAL EDGE. THESE OUTER SURFACE CHARACTERISTICS COMBINE WITH THE CHARACTERISTICS AFFORDED BY THE COMPOSITIONS TO PROVIDE EASY LIGHTINING OF THE LOG.
Inventors
- 👤 C Ronden
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |