US3034927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of synthetic leather
Assignee: Lantor Ltd
•
Filing: 1959-04-14
•
Granted: 1962-05-15
•
Expires: 1979-04-14
Abstract
No abstract record available.
Inventors
- 👤 Fairclough John Holden
- 👤 Atkins Harold Jeffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:19
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4326; D04H1/435; D04H1/425; D04H1/4258; D04H1/4334; D04H1/58; D04H1/587; D04H1/64; D04H1/645; D04H1/65; D06; D06N; D06N3/00; D06N3/007; D06N3/0077; D06N3/04; D06N3/10; Y; Y10; Y10S; Y10S428/00; Y10S428/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A METHOD OF MANUFACTURING A LEATHER-LIKE MATERIAL HAVING A "GRAIN" SIDE AND A "FLESH" SIDE WHICH COMPRISES PRESSING A SUBSTANTIALLY DRY WEB OF FIBERS, HAVING A SUBSTANTIALLY RANDOM ORIENTATION AND BONDED TOGETHER WITH A QUANTITY OF A POLYMERIC THERMOPLASTIC FIBRE-BONDING AGENT WHICH SOFTENS AT A TEMPERATURE LESS THAN THE TEMPERATURE AT WHICH THE FIBRES OF THE WET SOFTEN, AND SIMULTANEOUSLY APPLYING HEAT TO ONE SIDE ONLY OF THE WEB SUFFICIENT TO CAUSE THE BONDING AGENT TO SOFTEN ONLY ON THAT SIDE SO AS TO FORM A MATERIAL WHICH HAS A GREATER DENSITY ON THAT SIDE THAN ON THE OTHER AND WHICH RETAINS THE DENSITY DIFFERENCE WHEN REMOVED FROM THE HEAT AND PRESSURE, THE QUANTITY OF BONDING AGENT BEING SUCH THAT THE WEB SO FORMED CONTAINS NOT LESS THAN 40% AND NOT MORE THAN 75% CALCULATED ON THE TOTAL WEIGHT OF THE DRY BONDED WEB, OF BONDING AGENT.
Claim 2
Independent Claim
147 words
A METHOD OF MANUFACTURING A LEATHER-LIKE MATERIAL HAVING A "GRAIN" SIDE AND A "FLESH" SIDE WHICH COMPRISES PRESSING A SUBSTANTIALLY DRY WEB OF FIBERS, HAVING A SUBSTANTIALLY RANDOM ORIENTATION AND BONDED TOGETHER WITH A QUANTITY OF A POLYMERIC THERMOPLASTIC FIBRE-BONDING AGENT WHICH SOFTENS AT A TEMPERATURE LESS THAN THE TEMPERATURE AT WHICH THE FIBRES OF THE WET SOFTEN, AND SIMULTANEOUSLY APPLYING HEAT TO ONE SIDE ONLY OF THE WEB SUFFICIENT TO CAUSE THE BONDING AGENT TO SOFTEN ONLY ON THAT SIDE SO AS TO FORM A MATERIAL WHICH HAS A GREATER DENSITY ON THAT SIDE THAN ON THE OTHER AND WHICH RETAINS THE DENSITY DIFFERENCE WHEN REMOVED FROM THE HEAT AND PRESSURE, THE QUANTITY OF BONDING AGENT BEING SUCH THAT THE WEB SO FORMED CONTAINS NOT LESS THAN 40% AND NOT MORE THAN 75% CALCULATED ON THE TOTAL WEIGHT OF THE DRY BONDED WEB, OF BONDING AGENT.
References Cited (Backward Citations)
US2064360A
Cited
US2715588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |