US3127312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fumigant-extended polyurethane foams
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
•
Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:16
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
25 words
A POLYURETHANE FOAM EXTENDED WITH FROM 5 TO 50 WEIGHT PERCENT OF A FUMIGANT SELECTED FROM THE GROUP CONSISTING OF NAPHTHALENE, PARADICHLOROBENZENE, HEXACHLOROETHANE AND CAMPHOR.
Claim 2
Dependent Claim
25 words
A POLYURETHANE FOAM EXTENDED WITH FROM 5 TO 50 WEIGHT PERCENT OF A FUMIGANT SELECTED FROM THE GROUP CONSISTING OF NAPHTHALENE, PARADICHLOROBENZENE, HEXACHLOROETHANE AND CAMPHOR.
Claim 3
Dependent Claim
55 words
A PROCESS FOR THE PRODUCTION OF A FUMIGANT EXTENDED POLYURETHANE FOAM COMPRISING THE STEPS OF REACTING AN AROMATIC DIISOCYANATE WITH A LIQUID POLYOL HAVING A MOLECULAR WEIGHT RANGING FROM ABOUT 500 TO ABOUT 10,000 AND A FUMIGANT SELECTED FROM THE GROUP CONSISTING OF NAPHTHALENE, PARADICHLOROBENZENE, HEXACHLOROETHANE AND CAMPHOR IN THE PRESENCE OF A BLOWING AGENT.
Claim 4
Dependent Claim
55 words
A PROCESS FOR THE PRODUCTION OF A FUMIGANT EXTENDED POLYURETHANE FOAM COMPRISING THE STEPS OF REACTING AN AROMATIC DIISOCYANATE WITH A LIQUID POLYOL HAVING A MOLECULAR WEIGHT RANGING FROM ABOUT 500 TO ABOUT 10,000 AND A FUMIGANT SELECTED FROM THE GROUP CONSISTING OF NAPHTHALENE, PARADICHLOROBENZENE, HEXACHLOROETHANE AND CAMPHOR IN THE PRESENCE OF A BLOWING AGENT.
References Cited (Backward Citations)
US2440781A
Cited
GB721896A
Cited
US2861965A
Cited
US3006870A
Cited
US2966440A
Cited
US2916855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |