Patent US2281616A successfully refreshed from Google Patents.
Patent US3539144A successfully refreshed from Google Patents.
US3539144A
Expired / Lapsed
US
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Mold for molding polyurethane foam articles
Assignee: Carl Freudenberg KG
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Filing: 1966-08-29
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Granted: 1970-11-10
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Expires: 1986-08-29
Abstract
No abstract record available.
Inventors
- 👤 Hans-Dietrich Krug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:12
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/34; B; B29; B29C; B29C33/00; B29C33/38; B29C33/40; B29C33/405; B29C33/56; B29C33/60; B29C33/62; B29C44/00; B29C44/02; B29C44/04; B29C44/10; B29C44/34; B29C44/58; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/22; C08G18/24; C08G18/244; B29K; B29K2027/00; B29K2027/12; B29K2075/00; B29K2083/00; B29K2105/00; B29K2105/04; B29K2105/043; B29K2105/24; B29K2883/00; C08J2375/00; C08J2375/04; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249988; Y10T428/249989
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |