US3087575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic construction unit
Assignee: RTX BBN Technologies Corp
•
Filing: 1960-11-07
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Granted: 1963-04-30
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Expires: 1980-11-07
Abstract
No abstract record available.
Inventors
- 👤 Jordan J Baruch
- 👤 Bill G Watters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:00
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; B; B28; B28B; B28B11/00; B28B11/04; B28B11/042; B28B11/043; E04B1/8404; E04C; E04C1/00; E04C1/40; E04C1/41; E04B2/00; E04B2/74; E04B2/7407; E04B2/7409; E04B2001/8245; E04B2001/8254; E04B2001/8457; E04B2001/8476
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A BUILDING BLOCK OF AIR-PERVIOUS CINDER-LIKE MATERIAL HAVING OPPOSED FACES, SAID BLOCK HAVING AT LEAST ONE INTERNAL CAVITY SURROUNDED BY WEBS OF SAID MATERIAL, SOME OF SAID WEBS RESPECTIVELY EXTENDING FROM SAID CAVITY TO SAID OPPOSED FACES, BEING THIN RELATIVE TO SAID CAVITY AND BEING PERMEATED BY AIR PATHS PERMITTING AIR AND AIR-CARRIED ACOUSTIC WAVES TO PENETRATE THE MATERIAL BETWEEN THE FACES OF THE BLOCK AND SAID CAVITY, OTHERS OF SAID WEBS EXTENDING BETWEEN SAID FACES ALONG THE SIDES OF SAID CAVITY AND PROVIDING PATHS HAVING SUBSTANTIALLY GREATER ACOUSTIC TRANSMISSION LOSS THAN PATHS THROUGH THE FIRST-MENTIONED WEBS AND SAID CAVITY, THE RATIO OF THE CAVITY VOLUME TO THE VOLUME OF CINDER-LIKE MATERIAL BEING FROM AT LEAST SUBSTANTIALLY 11/2:1 TO SUBSTANTIALLY 2:1, SAID CAVITY HAVING A
Claim 2
Dependent Claim
125 words
A BUILDING BLOCK OF AIR-PERVIOUS CINDER-LIKE MATERIAL HAVING OPPOSED FACES, SAID BLOCK HAVING AT LEAST ONE INTERNAL CAVITY SURROUNDED BY WEBS OF SAID MATERIAL, SOME OF SAID WEBS RESPECTIVELY EXTENDING FROM SAID CAVITY TO SAID OPPOSED FACES, BEING THIN RELATIVE TO SAID CAVITY AND BEING PERMEATED BY AIR PATHS PERMITTING AIR AND AIR-CARRIED ACOUSTIC WAVES TO PENETRATE THE MATERIAL BETWEEN THE FACES OF THE BLOCK AND SAID CAVITY, OTHERS OF SAID WEBS EXTENDING BETWEEN SAID FACES ALONG THE SIDES OF SAID CAVITY AND PROVIDING PATHS HAVING SUBSTANTIALLY GREATER ACOUSTIC TRANSMISSION LOSS THAN PATHS THROUGH THE FIRST-MENTIONED WEBS AND SAID CAVITY, THE RATIO OF THE CAVITY VOLUME TO THE VOLUME OF CINDER-LIKE MATERIAL BEING FROM AT LEAST SUBSTANTIALLY 11/2:1 TO SUBSTANTIALLY 2:1, SAID CAVITY HAVING A
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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 |