US4232367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for maximizing interest earnings and providing payments from principal without interest penalty
Assignee: Individual
•
Filing: 1978-06-12
•
Granted: 1980-11-04
•
Expires: 1998-06-12
Abstract
Abstract A calculator apparatus is provided for computing minimum principal amounts for deposit into demand (passbook) accounts and into term (certificate-of-deposit) accounts paying interest at differing rates. The computed minimum principal amounts not only satisfy the minimum deposit requirements of the term accounts but, when deposited, provide both maximum interest earnings and payments from principal, without interest penalty ordinarily associated with early withdrawals. The apparatus comprises a keyboard, a read-write memory, a logic unit, a printer, and a display unit. The logic unit includes an arithmetic unit having a plurality of data storage registers and a read-only-memory with a stored program. The apparatus computes the minimum principal amounts in accordance with the stored program and in response to entered data.
Inventors
- 👤 Robert H. Youden
- 👤 Charles S. Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:12
CPC Classifications
G; G06; G06Q; G06Q40/00; G06Q40/02; G06Q40/03
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
186 words
Calculator apparatus for determining minimum principal amounts depositable into passbook and term accounts having pre-determined interest rates and minimum deposit requirements to provide maximum interest earnings and payments from principal without interest penalty, the apparatus comprising: keyboard means having a plurality of keys for entering data including keys for entering a selected number of years and a key for initiating minimum principal calculations; first memory means coupled to the keyboard means for storing entered data; logic means coupled to the first memory means and including a second memory means having a program, the predetermined interest rates and the minimum deposit requirements stored therein for calculating, under control of the stored program and in response to actuation of the key for initiating minimum principal calculations, minimum principal amounts in accordance with the predetermined interest rates, the minimum deposit requirements and the number of years and payment amount selected, the minimum principal amounts being depositable into the passbook and term accounts to provide maximum interest earnings and payments from principal without interest penalty; and printer means coupled to the logic means for printing the calculated minimum principal amounts.
Claim 2
Dependent Claim
186 words
Calculator apparatus for determining minimum principal amounts depositable into passbook and term accounts having pre-determined interest rates and minimum deposit requirements to provide maximum interest earnings and payments from principal without interest penalty, the apparatus comprising: keyboard means having a plurality of keys for entering data including keys for entering a selected number of years and a key for initiating minimum principal calculations; first memory means coupled to the keyboard means for storing entered data; logic means coupled to the first memory means and including a second memory means having a program, the predetermined interest rates and the minimum deposit requirements stored therein for calculating, under control of the stored program and in response to actuation of the key for initiating minimum principal calculations, minimum principal amounts in accordance with the predetermined interest rates, the minimum deposit requirements and the number of years and payment amount selected, the minimum principal amounts being depositable into the passbook and term accounts to provide maximum interest earnings and payments from principal without interest penalty; and printer means coupled to the logic means for printing the calculated minimum principal amounts.
Claim 3
Dependent Claim
29 words
The calculator apparatus as in claim 1 wherein the keyboard means includes a key operable with selected ones of the keys for entering data to specify a desired payment.
Claim 4
Dependent Claim
35 words
The calculator apparatus as in claim 1 wherein the keyboard means includes a key operable with selected ones of the keys for entering data to specify a deposit for use in providing a desired payment.
Claim 5
Dependent Claim
35 words
The calculator apparatus as in claim 1 wherein the keyboard means includes a key operable with selected ones of the keys for entering data to specify a deposit for use in creating a desired residual.
Claim 6
Dependent Claim
43 words
The calculator apparatus as in claim 1 wherein the keyboard means includes a key operable with selected ones of the keys for entering data to specify a desired residual that is to be produced at the end of the selected number of years.
Claim 7
Dependent Claim
38 words
The calculator apparatus as in claim 1 wherein the keyboard means includes a key operable with selected ones of the keys for entering data to specify an inflation percentage factor by which the payments are to be adjusted.
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) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |