Patent US2301271A successfully refreshed from Google Patents.
Patent US2651618A successfully refreshed from Google Patents.
US2651618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized toughened latex compositions
Assignee: BB Chemical Co
•
Filing: 1950-04-11
•
Granted: 1953-09-08
•
Expires: 1970-04-11
Abstract
No abstract record available.
Inventors
- 👤 Hall Alan Montague
- 👤 Woolman Ronald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:29
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/12; H01J9/125; C; C08; C08C; C08C1/00; C08C1/02; C08C1/06; C08L; C08L7/00; C08L7/02; C08L89/00; C08L89/005; C08L89/04; C08L89/06; H01J1/00; H01J1/02; H01J1/32; C08K; C08K5/00; C08K5/16; C08K5/21; F; F02; F02B; F02B2275/00; F02B2275/20; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; F02F2001/244; F02F2001/245; H01J2201/00; H01J2201/32; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/926
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A LATEX COMPOSITION COMPRISING A MIXTURE OF A LIQUID DISPERSION OF A RUBBER TOUGHENING AGENT FOR THE GROUP CONSISTING OF PHENOL ALDEHYDE RESINS, CELLULOSE ESTERS AND CELLULOSE ETHERS, SAID DISPERSION CONTAINING A POLAR ORGANIC SOLVENT AND AN AQUEOUS DISPERSION WHEREIN THE DISPERSED PHASE COMPRISES NATURAL RUBBER INDIVIDUAL PARTICLES OF WHICH HAVE PRECIPITATED THEREON A CASEIN-UREA MATERIAL COMPRISING AT LEAST ONEHALF PART BY WEIGHT OF CASEIN TO ONE PART BY WEIGHT OF UREA TOGETHER WITH FORMALDEHYDE, AT LEAST 11/2 PARTS COMBINED WEIGHT OF CASEIN AND UREA BEING ASSOCIATED WITH 100 PARTS BY WEIGHT OR RUBBER SOLIDS IN SAID DISPERSION
Claim 2
Dependent Claim
98 words
A LATEX COMPOSITION COMPRISING A MIXTURE OF A LIQUID DISPERSION OF A RUBBER TOUGHENING AGENT FOR THE GROUP CONSISTING OF PHENOL ALDEHYDE RESINS, CELLULOSE ESTERS AND CELLULOSE ETHERS, SAID DISPERSION CONTAINING A POLAR ORGANIC SOLVENT AND AN AQUEOUS DISPERSION WHEREIN THE DISPERSED PHASE COMPRISES NATURAL RUBBER INDIVIDUAL PARTICLES OF WHICH HAVE PRECIPITATED THEREON A CASEIN-UREA MATERIAL COMPRISING AT LEAST ONEHALF PART BY WEIGHT OF CASEIN TO ONE PART BY WEIGHT OF UREA TOGETHER WITH FORMALDEHYDE, AT LEAST 11/2 PARTS COMBINED WEIGHT OF CASEIN AND UREA BEING ASSOCIATED WITH 100 PARTS BY WEIGHT OR RUBBER SOLIDS IN SAID DISPERSION
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) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |