Quarterly report [Sections 13 or 15(d)]

SCHEDULE OF SEGMENT REPORTING INFORMATION (Details)

v3.25.2
SCHEDULE OF SEGMENT REPORTING INFORMATION (Details) - USD ($)
 3 Months Ended 6 Months Ended
Apr. 30, 2025
Jan. 31, 2025
Apr. 30, 2024
Jan. 31, 2024
Apr. 30, 2025
Apr. 30, 2024
Segment Reporting Information [Line Items]            
Net Revenues $ 7,017,459   $ 5,323,178   $ 12,227,174 $ 9,784,369
Cost of Revenues 2,520,178   1,584,744   4,301,423 2,959,199
Gross Profit 4,497,281   3,738,434   7,925,751 6,825,170
Research & Development 689,995   542,481   1,233,121 1,028,458
Selling, General & Administrative 2,719,602   1,845,570   4,942,924 3,890,945
Total Operating Expenses 3,409,597   2,388,051   6,176,045 4,919,403
INCOME FROM OPERATIONS 1,087,684   1,350,383   1,749,706 1,905,767
Other Income            
Interest Income 145,594   293,468   339,765 486,008
Total Other Income 177,926   290,832   450,764 518,392
INCOME BEFORE INCOME TAX EXPENSE 1,265,610   1,641,215   2,200,470 2,424,159
Income Tax (Expense) Benefit            
Current Tax (Expense) (374,701)   (191,073)   (423,575) (157,058)
Deferred Tax Benefit (Expense) 17,853   (34,904)   44,842 (221,975)
Total Income Tax (Expense) (356,848)   (225,977)   (378,733) (379,033)
COMPREHENSIVE INCOME, net of tax 908,762 $ 912,975 1,415,238 $ 629,888 1,821,737 2,045,126
Supplemental Disclosures            
Total Assets 60,590,144       60,590,144  
Total Liabilities 4,701,647       4,701,647  
Depreciation and Amortization         424,738 350,782
Other Income 32,332   (2,636)   110,999 32,384
Segment Reporting [Member]            
Segment Reporting Information [Line Items]            
Net Revenues 7,017,459   5,323,178   12,227,174 9,784,369
Cost of Revenues 2,520,178   1,584,744   4,301,423 2,959,199
Gross Profit 4,497,281   3,738,434   7,925,751 6,825,170
Research & Development 689,995   542,481   1,233,121 1,028,458
Selling, General & Administrative 2,719,602   1,845,570   4,942,924 3,890,945
Total Operating Expenses 3,409,597   2,388,051   6,176,045 4,919,403
INCOME FROM OPERATIONS 1,087,684   1,350,383   1,749,706 1,905,767
Other Income            
Other Income 32,332       110,999 32,384
Interest Income 145,594   293,468   339,765 486,008
Total Other Income 177,926   290,832   450,764 518,392
INCOME BEFORE INCOME TAX EXPENSE 1,265,610   1,641,215   2,200,470 2,424,159
Income Tax (Expense) Benefit            
Current Tax (Expense) (374,701)   (191,073)   (423,575) (157,058)
Deferred Tax Benefit (Expense) 17,853   (34,904)   44,842 (221,975)
Total Income Tax (Expense) (356,848)   (225,977)   (378,733) (379,033)
COMPREHENSIVE INCOME, net of tax 908,762   1,415,238   1,821,737 2,045,126
Supplemental Disclosures            
Total Assets 60,590,144   53,997,156   60,590,144 53,997,156
Total Liabilities 4,701,647   2,930,786   4,701,647 2,930,786
Revenues from inter-company sales - eliminated from sales above 2,592,803   897,005   3,848,699 2,168,729
Depreciation and Amortization 335,667   194,113   669,072 384,651
Purchases of Long-lived Assets 24,211   197,342   152,319 359,818
Other Income     (2,636)      
Marine Technology Business [Member]            
Segment Reporting Information [Line Items]            
Net Revenues     3,524,714     7,067,480
Marine Technology Business [Member] | Segment Reporting [Member]            
Segment Reporting Information [Line Items]            
Net Revenues 3,878,090   3,524,714     7,067,480
Cost of Revenues 1,251,417   697,464     1,671,344
Gross Profit 2,626,673   2,827,250     5,396,136
Research & Development 565,385   485,061     946,436
Selling, General & Administrative 1,097,358   792,820     1,628,211
Total Operating Expenses 1,662,743   1,277,881     2,574,647
INCOME FROM OPERATIONS 963,930   1,549,369     2,821,489
Other Income            
Other Income 4,967         5,690
Interest Income 86,358   202,157     337,888
Total Other Income 91,325   187,541     343,578
INCOME BEFORE INCOME TAX EXPENSE 1,055,255   1,736,910     3,165,067
Income Tax (Expense) Benefit            
Current Tax (Expense) (32,658)   (43,900)     (79,440)
Deferred Tax Benefit (Expense)   (10,975)     16,353
Total Income Tax (Expense) (32,658)   (54,875)     (63,087)
COMPREHENSIVE INCOME, net of tax 1,022,597   1,682,035     3,101,980
Supplemental Disclosures            
Total Assets 37,175,601   37,040,637   37,175,601 37,040,637
Total Liabilities 2,689,882   1,807,318   2,689,882 1,807,318
Revenues from inter-company sales - eliminated from sales above 2,189,543   474,742     1,423,676
Depreciation and Amortization 134,486   158,112     311,131
Purchases of Long-lived Assets 4,997   153,339     285,762
Other Income     (14,616)      
Acoustic Sensors and Materials Business [Member]            
Segment Reporting Information [Line Items]            
Net Revenues 1,299,069          
Acoustic Sensors and Materials Business [Member] | Segment Reporting [Member]            
Segment Reporting Information [Line Items]            
Net Revenues 1,299,069       2,611,330  
Cost of Revenues 449,664       951,781  
Gross Profit 849,405       1,659,549  
Research & Development 95,266       186,230  
Selling, General & Administrative 608,923       847,177  
Total Operating Expenses 704,189       1,033,407  
INCOME FROM OPERATIONS 145,216       626,142  
Other Income            
Other Income 27,365       100,186  
Interest Income 1,290       3,592  
Total Other Income 28,655       103,778  
INCOME BEFORE INCOME TAX EXPENSE 173,871       729,920  
Income Tax (Expense) Benefit            
Current Tax (Expense) (167,083)       (167,083)  
Deferred Tax Benefit (Expense)        
Total Income Tax (Expense) (167,083)       (167,083)  
COMPREHENSIVE INCOME, net of tax 6,788       562,837  
Supplemental Disclosures            
Total Assets 7,036,570       7,036,570  
Total Liabilities 1,241,450       1,241,450  
Revenues from inter-company sales - eliminated from sales above 19,339       22,091  
Depreciation and Amortization 173,022       329,392  
Purchases of Long-lived Assets 6,635       113,977  
Marine Engineering Business [Member]            
Segment Reporting Information [Line Items]            
Net Revenues 1,840,300   1,798,464   3,461,945 2,716,889
Marine Engineering Business [Member] | Segment Reporting [Member]            
Segment Reporting Information [Line Items]            
Net Revenues 1,840,300   1,798,464   3,461,945 2,716,889
Cost of Revenues 819,097   887,280   1,486,057 1,287,855
Gross Profit 1,021,203   911,184   1,975,888 1,429,034
Research & Development 29,344   57,420   75,694 82,022
Selling, General & Administrative 540,091   596,451   1,177,987 1,196,935
Total Operating Expenses 569,435   653,871   1,253,681 1,278,957
INCOME FROM OPERATIONS 451,768   257,313   722,207 150,077
Other Income            
Other Income       26,694
Interest Income 25,954   52,067   53,310 108,876
Total Other Income 25,954   64,047   53,310 135,570
INCOME BEFORE INCOME TAX EXPENSE 477,722   321,360   775,517 285,647
Income Tax (Expense) Benefit            
Current Tax (Expense)    
Deferred Tax Benefit (Expense)    
Total Income Tax (Expense)    
COMPREHENSIVE INCOME, net of tax 477,722   321,360   775,517 285,647
Supplemental Disclosures            
Total Assets 13,538,446   13,945,102   13,538,446 13,945,102
Total Liabilities 609,333   912,679   609,333 912,679
Revenues from inter-company sales - eliminated from sales above 83,921   104,263   102,734 115,053
Depreciation and Amortization 15,823   24,343   32,527 49,700
Purchases of Long-lived Assets 12,579   1,185   15,047 3,393
Other Income     11,980      
Overhead [Member] | Segment Reporting [Member]            
Segment Reporting Information [Line Items]            
Net Revenues    
Cost of Revenues    
Gross Profit    
Research & Development      
Selling, General & Administrative 473,230   456,299   1,254,538 1,065,799
Total Operating Expenses 473,230   456,299   1,254,538 1,065,799
INCOME FROM OPERATIONS (473,230)   (456,299)   (1,254,538) (1,065,799)
Other Income            
Other Income      
Interest Income 31,992   39,244   41,192 39,244
Total Other Income 31,992   39,244   41,192 39,244
INCOME BEFORE INCOME TAX EXPENSE (441,238)   (417,055)   (1,213,346) (1,026,555)
Income Tax (Expense) Benefit            
Current Tax (Expense) (174,960)   (147,173)   (174,960) (77,618)
Deferred Tax Benefit (Expense) 17,853   (23,929)   44,842 (238,328)
Total Income Tax (Expense) (157,107)   (171,102)   (130,118) (315,946)
COMPREHENSIVE INCOME, net of tax (598,345)   (588,157)   (1,343,464) (1,342,501)
Supplemental Disclosures            
Total Assets 2,839,527   3,011,417   2,839,527 3,011,417
Total Liabilities 160,982   210,789   160,982 210,789
Revenues from inter-company sales - eliminated from sales above 300,000   318,000   612,000 630,000
Depreciation and Amortization 12,336   11,658   25,336 23,820
Purchases of Long-lived Assets   42,818   $ 70,663
Other Income          
Marine Technology Products Business [Member]            
Segment Reporting Information [Line Items]            
Net Revenues 3,878,090       6,153,899  
Marine Technology Products Business [Member] | Segment Reporting [Member]            
Segment Reporting Information [Line Items]            
Net Revenues         6,153,899  
Cost of Revenues         1,863,585  
Gross Profit         4,290,314  
Research & Development         971,197  
Selling, General & Administrative         1,663,222  
Total Operating Expenses         2,634,419  
INCOME FROM OPERATIONS         1,655,895  
Other Income            
Other Income         10,813  
Interest Income         241,671  
Total Other Income         252,484  
INCOME BEFORE INCOME TAX EXPENSE         1,908,379  
Income Tax (Expense) Benefit            
Current Tax (Expense)         (81,532)  
Deferred Tax Benefit (Expense)          
Total Income Tax (Expense)         (81,532)  
COMPREHENSIVE INCOME, net of tax         1,826,847  
Supplemental Disclosures            
Total Assets 37,175,601       37,175,601  
Total Liabilities $ 2,689,882       2,689,882  
Revenues from inter-company sales - eliminated from sales above         3,111,874  
Depreciation and Amortization         281,817  
Purchases of Long-lived Assets         $ 23,295