Patent US3087500A successfully refreshed from Google Patents.
US3087500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cigarette filters
Assignee: Individual
•
Filing: 1960-10-10
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Granted: 1963-04-30
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Expires: 1980-10-10
Abstract
No abstract record available.
Inventors
- 👤 Jacobson George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:32
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04; Y; Y10; Y10S; Y10S55/00; Y10S55/39
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A TOBACCO SMOKE FILTER FORMED OF A MASS OF RANDOMLY ARRANGED PARTICLES OF TOURMALINE DISPERSED IN A NONTOXIC CARRIER.
Claim 2
Dependent Claim
19 words
A TOBACCO SMOKE FILTER FORMED OF A MASS OF RANDOMLY ARRANGED PARTICLES OF TOURMALINE DISPERSED IN A NONTOXIC CARRIER.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |