US3338690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood treatment and product
Assignee: Individual
•
Filing: 1963-11-12
•
Granted: 1967-08-29
•
Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Charles W Calhoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:56
CPC Classifications
C; C10; C10L; C10L5/00; C10L5/40; C10L5/44; C10L5/02; C10L5/26; C10L5/32; Y; Y02; Y02E; Y02E50/00; Y02E50/10; Y02E50/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS OF TREATING HARDWOOD COMPRISING THE STEPS OF SOAKING THE HARDWOOD IN AN AQUEOUS SOLUTION OF A HARDWOOD DISTILLATE UNTIL THE WOOD IS SUBSTANTIALLY SATURATED, AND COATING THE SATURATED HARDWOOD IN ITS WET STATE WITH A NON-TOXIC SYNTHETIC OR NATURAL WAX SEALER MAINTAINED AT A TEMPERATURE ABOVE ITS OWN MELTING POINT BUT BELOW THE BOILING POINT OF WATER UNTIL THE AMOUNT OF WAX COAT IS FROM 3% TO 7% BY WEIGHT OF THE SATURATED HARDWOOD.
Claim 2
Dependent Claim
76 words
A PROCESS OF TREATING HARDWOOD COMPRISING THE STEPS OF SOAKING THE HARDWOOD IN AN AQUEOUS SOLUTION OF A HARDWOOD DISTILLATE UNTIL THE WOOD IS SUBSTANTIALLY SATURATED, AND COATING THE SATURATED HARDWOOD IN ITS WET STATE WITH A NON-TOXIC SYNTHETIC OR NATURAL WAX SEALER MAINTAINED AT A TEMPERATURE ABOVE ITS OWN MELTING POINT BUT BELOW THE BOILING POINT OF WATER UNTIL THE AMOUNT OF WAX COAT IS FROM 3% TO 7% BY WEIGHT OF THE SATURATED HARDWOOD.
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |