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US4962532A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for providing notification of classified electronic message delivery restriction

Assignee: International Business Machines Corp
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Filing: 1988-12-22
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Granted: 1990-10-09
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Expires: 2008-12-22
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Abstract

Abstract A method is disclosed for notifying both the source and intended recipient of a classified electronic message transmitted via a computer network of a delivery restriction imposed by an insufficient classification level at the recipient's system. A required classification level is transmitted by the source of a classified electronic message in association with each classified electronic message in an indication of each classified electronic message is stored in an output log at the source system. Prior to permitting delivery of a classified electronic message, the required classification level is then compared to the classification level of the intended recipient. Delivery of a classified electronic message is automatically restricted in response to an insufficient classification level at the recipient's system and a status message is then transmitted to either or both the source and the intended recipient of the classified electronic message. In a preferred embodiment of the present invention, the recipient is automatically prompted to attempt to obtain a classification upgrade or forward the message to an alternate recipient in response to such restriction. Additionally, the method of the present invention permits an undelivered message to be destroyed by the source, the recipient, or the system in response to the failure of delivery.

Inventors

  • 👤 Chander Kasiraj
  • 👤 Timothy J. Wolf

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 12:40
CPC Classifications
H; H04; H04L; H04L51/00; H04L51/21; H04L51/23; G; G06; G06Q; G06Q10/00; G06Q10/10; G06Q10/107; H04L51/224

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 109 words
A method for notifying the source of a classified electronic message transmitted via a computer network of a delivery restriction imposed by the classification level of the recipient, comprising the steps of: transmitting a required classification level in association with an electronic message to a selected recipient via a computer network; comparing said transmitted required classification level with the classification level of said selected recipient; automatically restricting delivery of said electronic message to said selected recipient in response to the failure of said classification level of said selected recipient to meet or exceed said transmitted required classification level; and automatically transmitting the status of said delivery to said source.
Claim 2
Independent Claim 109 words
A method for notifying the source of a classified electronic message transmitted via a computer network of a delivery restriction imposed by the classification level of the recipient, comprising the steps of: transmitting a required classification level in association with an electronic message to a selected recipient via a computer network; comparing said transmitted required classification level with the classification level of said selected recipient; automatically restricting delivery of said electronic message to said selected recipient in response to the failure of said classification level of said selected recipient to meet or exceed said transmitted required classification level; and automatically transmitting the status of said delivery to said source.
Claim 3
Dependent Claim 54 words
The method for notifying the source of a classified electronic message transmitted via a computer network of a delivery restriction imposed by the classification level of the recipient according to claim 1 further including the step of storing an indication of each transmitted electronic message along with said required classification level at said source.
Claim 4
Dependent Claim 52 words
The method for notifying the source of a classified electronic message transmitted via a computer network of a delivery restriction imposed by the classification level of the recipient according to claim 2 further including the step of storing said transmitted status in association with said stored indication of each transmitted electronic message.
Claim 5
Dependent Claim 57 words
The method for notifying the source of a classified electronic message transmitted via a computer network of a delivery restriction imposed by the classification level of the recipient according to claim 1 further including the step of automatically transmitting a notification of said delivery restriction to said selected recipient in response to said automatic restriction of delivery.
Claim 6
Dependent Claim 55 words
The method for notifying the source of a classified electronic message transmitted via a computer network of a delivery restriction imposed by the classification level of the recipient according to claim 4 further including the step of prompting said selected recipient to request an increased classification level in response to said automatic restriction of delivery.
Claim 7
Dependent Claim 54 words
The method for notifying the source of a classified electronic message transmitted via a computer network of a delivery restriction imposed by the classification level of the recipient according to claim 1 further including the step of prompting said source to dispose of said electronic message in response to said automatic restriction of delivery.
Claim 8
Dependent Claim 51 words
The method for notifying the source of a classified electronic message transmitted via a computer network of a delivery restriction imposed by the classification level of the recipient according to claim 1 further including the step of automatically disposing of said electronic message in response to said automatic restriction of delivery.
Claim 9
Dependent Claim 60 words
The method for notifying the source of a classified electronic message transmitted via a computer network of a delivery restriction imposed by the classification level of the recipient according to claim 4 further including the step of prompting said selected recipient to request transmittal of said electronic message to an alternate recipient in response to said automatic restriction of delivery.

References Cited (Backward Citations)

US4328542A Cited
US4439830A Cited
US4672572A Cited
US4823389A Cited
US4811393A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-10-08 1994-04-09 1994-10-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-10-08 1998-04-09 1998-10-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-10-08 2002-04-09 2002-10-09 $7700.00 Window Closed / Lapsed

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