Patent US4312473A successfully refreshed from Google Patents.
US4312473A
Expired / Lapsed
US
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Two-chamber envelope package
Assignee: Robert Bosch GmbH
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Filing: 1980-03-11
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Granted: 1982-01-26
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Expires: 2000-03-11
Abstract
Abstract A two-chamber flat envelope for packaging various goods is proposed, the chambers of which can be opened uniformly for the purpose of filling. The envelope having two outer walls and a separating partition has plural seams at the edges of the walls joining these walls to one another. Furthermore the envelope has a first seam, which joins the partition to the first outer wall, and a second seam, which joins the partition to the other outer wall, each being located at a predetermined distance from one side seam.
Inventors
- 👤 Hans Hoeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:09
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/12; B65D81/00; B65D81/32; B65D81/3261
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
A two-chamber flat envelope having first and second outer walls of equal length and a separating partition disposed therebetween and joined together therewith in the edge areas thereof, characterized in that the said partition is coextensive with said length of said outer walls and joined to said first outer wall by a first seam along its length at a predetermined distance from a first edge and joined to said second outer wall along its length by a second seam at a predetermined distance from a second edge located opposite said first edge.
Claim 2
Dependent Claim
92 words
A two-chamber flat envelope having first and second outer walls of equal length and a separating partition disposed therebetween and joined together therewith in the edge areas thereof, characterized in that the said partition is coextensive with said length of said outer walls and joined to said first outer wall by a first seam along its length at a predetermined distance from a first edge and joined to said second outer wall along its length by a second seam at a predetermined distance from a second edge located opposite said first edge.
Claim 3
Dependent Claim
30 words
An envelope as defined by claim 1, characterized in that the distance from each first and second seams to its associated edge is approximately one-third the width of the envelope.
Claim 4
Dependent Claim
40 words
An envelope as defined by claim 1, wherein said first and second outer walls and said partition are made of equal sized heat-sealable packaging material, characterized in that said first and second seams are formed by means of heat sealing.
Claim 5
Dependent Claim
40 words
An envelope as defined by claim 2, wherein said first and second outer walls and said partition are made of equal sized heat-sealable packaging material, characterized in that said first and second seams are formed by means of heat sealing.
References Cited (Backward Citations)
US2401110A
Cited
US2916197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-25 | 1985-07-27 | 1986-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-25 | 1989-07-27 | 1990-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-25 | 1993-07-27 | 1994-01-26 | $7700.00 | Window Closed / Lapsed |