US3269989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intumescent coatings based upon polyesters of aliphatic diyne-diols
Assignee: Individual
•
Filing: 1962-03-14
•
Granted: 1966-08-30
•
Expires: 1982-03-14
Abstract
No abstract record available.
Inventors
- 👤 Eric T Rayner
- 👤 David A Yeadon
- 👤 Jr Lucien L Hopper
- 👤 Harold P Dupuy
- 👤 Frank G Dollear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:25
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/18; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4288; C08G18/67; C08G18/68; C08G18/683; C08G18/686; C08G63/00; C08G63/02; C08G63/12; C08G63/40; C08G63/42; C08G63/52; C09D167/00; C08G2150/00; C08G2150/60
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
17 words
A POLYESTER PREPARED BY REFLUXING, UNTIL THE THEORETICAL AMOUNT OF WATER IS PRODUCED, A MIXTURE OF SUB
Claim 2
Dependent Claim
17 words
A POLYESTER PREPARED BY REFLUXING, UNTIL THE THEORETICAL AMOUNT OF WATER IS PRODUCED, A MIXTURE OF SUB
Claim 3
Dependent Claim
71 words
A POLYESTER PREPARED BY REFLUXING, UNTIL THE THEOSTANTIALLY EQUIMOLAR PROPORTIONS OF A CONJUGATED DIYNERETICAL AMOUNT OF WATER IS PRODUCED, A MIXTURE OF SUBSTANTIALLY EQUIMOLAR PORPORTIONS OF 2,4-HEXADIYNE-1,6-DIOL DIOL IN WHICH THE HYDROXYL GROUPS ARE PRIMARY AND A DIBASIC ACID SELECTED FROM THE GROUP CONSISTING OF OXALIC, AND A DIBASIC ACID SELECTED FROM THE GROUP CONSISTING OF OXALIC, MALEIC, SUCCINIC, ADIPIC, SEBACIC, AND BUTYNEDIOIC MALEIC, SUCCINIC, ADIPIC, SEBACIC, AND BUTYNEDIOIC ACIDS. ACIDS.
Claim 4
Dependent Claim
71 words
A POLYESTER PREPARED BY REFLUXING, UNTIL THE THEOSTANTIALLY EQUIMOLAR PROPORTIONS OF A CONJUGATED DIYNERETICAL AMOUNT OF WATER IS PRODUCED, A MIXTURE OF SUBSTANTIALLY EQUIMOLAR PORPORTIONS OF 2,4-HEXADIYNE-1,6-DIOL DIOL IN WHICH THE HYDROXYL GROUPS ARE PRIMARY AND A DIBASIC ACID SELECTED FROM THE GROUP CONSISTING OF OXALIC, AND A DIBASIC ACID SELECTED FROM THE GROUP CONSISTING OF OXALIC, MALEIC, SUCCINIC, ADIPIC, SEBACIC, AND BUTYNEDIOIC MALEIC, SUCCINIC, ADIPIC, SEBACIC, AND BUTYNEDIOIC ACIDS. ACIDS.
References Cited (Backward Citations)
US2282827A
Cited
US2420644A
Cited
DE948086C
Cited
US2754217A
Cited
US2942014A
Cited
US2901516A
Cited
US2952630A
Cited
US3090764A
Cited
US3050480A
Cited
US2999104A
Cited
US3008910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |